'Abides Forever' in the Bible

Then the people answered. "We have heard out of the Law that the Christ abides forever. What do you mean by 'The Son of man must be lifted up'? Who is this Son of man?"

But the word of the Lord abides forever. And this is the word of the gospel which has been told to you.

and the world and its lusts are passing away, but he who ever does the will of God abides forever.