For as long as we can remember, the Watchtower (WT) has been using the words of Jesus in Matthew 7:14 to prove there is only true religion and all others are controlled by Satan. 
The official website of JW's under frequently asked questions says this about the question, 'Do You Believe That You Have the One True Religion?' They say, 'Jesus Christ didn’t agree with the view that there are many religions, many roads, all leading to salvation. ... Jehovah’s Witnesses believe that they’ve found that road. Otherwise, they’d look for another religion.' 
The NWT Bible of JW's says this, “Narrow is the gate and cramped the road leading off into life, and few are the ones finding it.” Matthew 7:14
JW's believe they've found the one and only true religion because it is a narrow path. Very few people are willing to do what Jehovah's Witnesses do. Certainly this religion must be the path to eternal life. Or is it? What does the Bible say?
To truly understand what Jesus meant in Matthew 7:14, it's best to read all the words of Jesus, especially Matthew chapters 5-7. It's important not to take the words of Jesus out of context.
As you read the words of Jesus, ask yourself this. Was he talking about religion? Did he say that we must find the one true religion in order to benefit from his sacrifice and inherit eternal life?
Jesus was definitely talking about a way of life that is difficult to follow. The 'road is narrow' and few are the ones finding it. Does this prove that the teachings of the Watchtower is the path to eternal life?
Let's take a look at the JW's because they believe they've found the only religion leading to salvation. However we shouldn't pick on the JW's. Many religions believe their religion is the best one. Did Jesus say there is only one true religion that is the path to God? If not, what did Jesus mean in Matthew 7:14?
We suggest that you read all the words of Jesus without the aid of Watchtower literature. Let God's Word be your only source of truth, not the words of man. Then pray to God for wisdom and understanding.
The Bible says this, 'Whoever believes in the Son has eternal life, but whoever rejects the Son will not see life, for God's wrath remains on him." John 3:36
What does it mean to 'believe' in the in Jesus. The Bible says that not all who say 'Lord, Lord will enter the Kingdom of heaven' Matthew 7:21. Also James 2:26 says that 'faith without works is dead'.
What are these 'works' that Christians must do? And why is the road leading to eternal 'narrow'? Why is it that 'few are the ones finding it'?
Jesus told us what we must do to inherit eternal life. Although what he says sounds simple and very easy, in fact it is not. Narrow is the gate. Cramped is the road and few are the ones finding it. Jesus knew that most people are looking for salvation in all the wrong places.
The real path to eternal life is so obvious that most people don't see it. Few are the ones finding the 'gate' and 'narrow road'. Even if someone stumbles upon the narrow road to eternal life, they may not be willing to stay on the path.
Notice what Jesus said in the Bible about how to inherit eternal life. Understand the words of Jesus. He will set you free and grant you eternal life if you do these two things.
The Bible says, ' On one occasion an expert in the law stood up to test Jesus. “Teacher,” he asked, “what must I do to inherit eternal life?”
“What is written in the Law?” he replied. “How do you read it?”
He answered: “‘Love the Lord your God with all your heart and with all your soul and with all your strength and with all your mind’ and, ‘Love your neighbor as yourself.”
“You have answered correctly,” Jesus replied. “Do this and you will live.”
But he wanted to justify himself, so he asked Jesus, “And who is my neighbor?”
In reply Jesus said: “A man was going down from Jerusalem to Jericho, when he fell into the hands of robbers. They stripped him of his clothes, beat him and went away, leaving him half dead. A priest happened to be going down the same road, and when he saw the man, he passed by on the other side. So too, a Levite, when he came to the place and saw him, passed by on the other side. But a Samaritan, as he traveled, came where the man was; and when he saw him, he took pity on him. He went to him and bandaged his wounds, pouring on oil and wine. Then he put the man on his own donkey, took him to an inn and took care of him. The next day he took out two silver coins and gave them to the innkeeper. ‘Look after him,’ he said, ‘and when I return, I will reimburse you for any extra expense you may have.’
“Which of these three do you think was a neighbor to the man who fell into the hands of robbers?”
The expert in the law replied, “The one who had mercy on him.”
Jesus told him, “Go and do likewise.” Luke 10:26-37
JW's are tolerant, respectful and kind to non believers. They don't want to be friends with unbelievers but they want to be 'friendly' in hopes of converting non believers to their religion.
JW's are not tolerant, respectful, and kind to people who leave their religion. In fact the Watchtower encourages Witnesses to hate apostates. They say that 'Jesus did not mean for us to love the hardened enemies of Jehovah' The Watchtower, July 15, 1961, page 42
JW's are told to shun people who leave (with some exceptions). As a result families and close friendship are destroyed. Both those who leave and those who stay suffer. Some lose their parents, grandparents, children, aunts, uncles, and cousins. Everyone loses their friends.
Some people believe they are loving but they are not. Most people who practice love, expect something in return. i.e. I'll do something nice but you must give me something in return. That is not love. It's merely a trade.
For example the leaders of the Watchtower Society might believe they represent God but their actions contradict the love Jesus taught. JW's who leave the organization are told they can associate with their family and friends once again if they come back to the Watchtower and promise loyalty. Is it moral to take what does not belong to you (i.e. someone's relationships) and then offer them back in exchange for loyalty? Is that the kind of love that leads to eternal life?
What about zealous Jehovah's Witnesses who blindly believe everything the Watchtower says? Are they on the path to eternal life? JW's love one another like Jesus commanded in John 13:34,35 but they don't love 'enemies' like Jesus commanded. They think they follow the whole Bible but the truth is they pick and choose. They accept some things from God's word and reject the rest. e.g. They only love people who love them. They won't have anything to do with people who leave the Watchtower. Therefore they're not fully on the path to eternal life. Love sounds easy but it is not. It is the narrow gate and few are finding it.
Jesus said, 'If you love those who love you, what credit is that to you? Even ‘sinners’ love those who love them. And if you do good to those who are good to you, what credit is that to you? Even ‘sinners’ do that.' Luke 6:32,33
Very few people consistently love their 'enemies', people who belong to other religions, and complete strangers.
In the case of the JW's, they refuse to love people who don't love them and people who expose the false teachings of Watchtower. 
In addition, instead of loving the people God created, JW's prefer to remain isolated from the world. They believe they are following Jesus and the Bible, but they are mistaken. They have been deceived by Satan. He was the first one who separated from God and that was the beginning of evil. Separation from the world and the people God created, moves JW's even further away from God and His love. Separation from the world puts a smile on Satan's face. It makes it impossible for them to love all their neighbors as Jesus commanded.
The Watchtower has twisted and misinterpreted the words of Jesus. Take a look at the evidence in God's word.
In the parable of the Good Samaritan, Jesus says illustrates that all people are our 'neighbors'. We are to love our neighbors as we love ourselves, - regardless of their religion or what they believe.
We are to love everyone, because God 'is kind to the ungrateful and the wicked'. Jesus said that by loving our enemies we become sons of the Most High. Luke 6:35; That's how to inherit eternal life.
Jesus did not tell us that religion is the path to salvation. Jesus said he is the way, the truth, and the life. John 14:6;
Religion, doctrines, 'correct' beliefs, and strict rules of conduct puts us on a narrow path, but it doesn't put us on the narrow road leading to eternal life. Love is the path to eternal life and few are the ones finding it.
Look at the parable of the Good Samaritan. Read it several times. Luke 10:26-37. That's what love is. How many people are willing to do what the Good Samaritan did? How many JW's are willing to love apostates and people who disagree with Watchtower? How many people are willing to help complete strangers without asking for anything in return? That's why the gate is narrow and the road is cramped.
'True love' is the path to eternal life, - not 'true religion'.
Very few people understand the love Jesus taught in the parable of the Good Samaritan. Very few people are willing to love their enemies and people they don't like. However that is the path to God and eternal life.
Narrow is the path to eternal life and few are the ones finding it.
JW's believe they've found the only true religion and the path to eternal life but they are mistaken.
Jehovah's Witnesses are definitely narrow minded. They will not consider any religious viewpoints other than what the Watchtower says is 'the truth'. See Censored Knowledge. However just because a religion is narrow minded doesn't mean they are on the 'narrow road to eternal life'.
Jesus said, “Do this and you will live.” Luke 10:26-37
1. The Watchtower teaches they are the only true religion and all others are false. They are dominated by Satan. Look at these Watchtower quotes
2. The truth is that only God can give us eternal life. Jesus said he is the way, the truth, and the life. John 14:6; People like the Good Samaritan are everywhere and in every religion but they are in the minority. The narrow path to eternal life is a not religion, 'correct' beliefs, or strict rules of conduct. It is love.
3. It's not easy for JW's to 'look for another religion' because of Watchtower mind control, disfellowshipping, disassociation, and religious discrimination against JW's who choose to leave. JW's who leave are treated like lepers. JW's are instructed not to have any contact with JW's who leave, - even saying a greeting such as 'hello, how are you?' is thought to be a sin against Jehovah.
Critics say the Watchtower has made themselves 50/50 partners with God. They claim to be Jehovah's channel of communication. Because of this special relationship with God that no other religion has, JW's fear the Governing Body of JW's. They must obey Elders and the organization in order to receive eternal life through Jesus Christ.
They're using Jehovah as a tool to control the minds of JW's and build their financial empire. Consider the following articles and decide for yourself if this is a correct observation.