Revelation 2:5; Revelation 3:3; Revelation 18:5

5 Remember therefore from whence thou art fallen , and repent , and do the first works; or else I will come unto thee quickly, and will remove thy candlestick out of his place, except thou repent .
3 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.
5 For her sins have reached unto heaven, and God hath remembered her iniquities.