Rev 3:1-3

Revelation 3:1-3 "And to the angel of the church in Sardis write, 'These things says He that has the seven Spirits of God and the seven stars: "I know your works, that you have a name, that you live, but you are dead. ² Be watchful, and strengthen that which remains, which you were about to cast out, for I have not found your works perfect before My God. ³ Remember therefore how you have received and heard, and hold fast, and repent. Therefore if you will not watch, I will come upon you like a thief, and by no means shall you know what hour I will come upon you.