ESV: Remember, then, what you received and heard. Keep it, and repent. If you will not wake up, I will come like a thief, and you will not know at what hour I will come against you.
NIV: Remember, therefore, what you have received and heard; hold it fast, and repent. But if you do not wake up, I will come like a thief, and you will not know at what time I will come to you.
NASB: So remember what you have received and heard; and keep it, and repent. Then if you are not alert, I will come like a thief, and you will not know at what hour I will come to you.
CSB: Remember, then, what you have received and heard; keep it, and repent. If you are not alert, I will come like a thief, and you have no idea at what hour I will come upon you.
NLT: Go back to what you heard and believed at first; hold to it firmly. Repent and turn to me again. If you don’t wake up, I will come to you suddenly, as unexpected as a thief.
KJV: Remember therefore how thou hast received and heard, and hold fast, and repent. If therefore thou shalt not watch, I will come on thee as a thief, and thou shalt not know what hour I will come upon thee.
NKJV: Remember therefore how you have received and heard; hold fast and repent. Therefore if you will not watch, I will come upon you as a thief, and you will not know what hour I will come upon you.