"Beware of false prophets who come disguised as harmless sheep, but are really wolves that will tear you apart. You can detect them by the way they act, just as you can identify a tree by its fruit. You don't pick grapes from thornbushes, or figs from thistles. A healthy tree produces good fruit, and an unhealthy tree produces bad fruit. A good tree can't produce bad fruit, and a bad tree can't produce good fruit. So every tree that does not produce good fruit is chopped down and thrown into the fire. Yes, the way to identify a tree or a person is by the kind of fruit that is produced.
Jesus told them, "Don't let anyone mislead you. For many will come in my name, saying, `I am the Messiah.' They will lead many astray. And wars will break out near and far, but don't panic. Yes, these things must come, but the end won't follow immediately. The nations and kingdoms will proclaim war against each other, and there will be famines and earthquakes in many parts of the world. But all this will be only the beginning of the horrors to come.
"Then you will be arrested, persecuted, and killed. You will be hated all over the world because of your allegiance to me. And many will turn away from me and betray and hate each other. And many false prophets will appear and will lead many people astray. Sin will be rampant everywhere, and the love of many will grow cold. But those who endure to the end will be saved. And the Good News about the Kingdom will be preached throughout the whole world, so that all nations will hear it; and then, finally, the end will come.
2 Peter 2:1-2
The Danger of False Teachers
But there were also false prophets in Israel, just as there will be false teachers among you. They will cleverly teach their destructive heresies about God and even turn against their Master who bought them. Theirs will be a swift and terrible end. Many will follow their evil teaching and shameful immorality. And because of them, Christ and his true way will be slandered.
"Keep on asking, and you will be given what you ask for. Keep on looking, and you will find. Keep on knocking, and the door will be opened. For everyone who asks, receives. Everyone who seeks, finds. And the door is opened to everyone who knocks. You parents--if your children ask for a loaf of bread, do you give them a stone instead? Or if they ask for a fish, do you give them a snake? Of course not! If you sinful people know how to give good gifts to your children, how much more will your heavenly Father give good gifts to those who ask him.
"Do for others what you would like them to do for you. This is a summary of all that is taught in the law and the prophets.
"You can enter God's Kingdom only through the narrow gate. The highway to hell is broad, and its gate is wide for the many who choose the easy way. But the gateway to life is small, and the road is narrow, and only a few ever find it.
****When Jesus talks about entering through a narrow gate and that many will miss it is because many will talk the talk and not walk the walk - they will not have the love and true desire in their hearts to follow God, and lead a Godly life, it is not because God doesn't choose them or accept them****