Jude 1:4-5

4I say this because certain bad people have secretly come among you. They have turned away from God. They are trying to change God's true message. They teach that we can do any evil things that we want to do. They say that God will be kind and he will forgive us for all those things. They do not accept the authority of Jesus Christ, who is our only Master and our Lord. God will certainly punish those wicked people. A long time ago God said that he would punish people like them.

5Remember that the Lord brought Israel's people out of Egypt where they had been slaves. But later he destroyed all those same people who did not trust him. I want you to remember these important things. You should already know all about them, but you must never forget them.