'Remember' in the Bible

Therefore, remember how far you have fallen. Repent and go back to what you were doing at first. If you don't, I will come to you and remove your lamp stand from its place unless you repent.

So remember what you received and heard. Obey it, and repent. If you are not alert, I will come like a thief, and you won't know the time when I will come to you.