'Remember' in the Bible

Remember therefore from where you have fallen, and repent and do {the works you did at first}. But if you do not, I am coming to you, and I will remove your lampstand from its place, unless you repent.

Therefore remember how you have received and heard, and observe [it], and repent. If therefore you are not on the alert, I will come like a thief, and you will never know [at] what hour I will come against you.