“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.”
King James Version (KJV)
3:3 Remember how - Humbly, zealously, seriously. Thou didst receive the grace of God once, and hear - His word. And hold fast - The grace thou hast received. And repent - According to the word thou hast heard.
Re 3:3 Remember therefore how thou hast received and heard. Remember the teaching formerly received, hold fast, cling to it, and repent of the falling away from it. I will come on thee as a thief. Suddenly; in a sudden judgment.