'Remain' in the Bible

Therefore, as for you, let that remain in you which you heard from the beginning. If that which you heard from the beginning remains in you, you also will remain in the Son, and in the Father.

As for you, the anointing which you received from him remains in you, and you don't need for anyone to teach you. But as his anointing teaches you concerning all things, and is true, and is no lie, and even as it taught you, you will remain in him.

Now, little children, remain in him, that when he appears, we may have boldness, and not be ashamed before him at his coming.

But whoever has the world's goods, and sees his brother in need, and closes his heart of compassion against him, how does the love of God remain in him?

By this we know that we remain in him and he in us, because he has given us of his Spirit.