Revelation 3:1-3

Darby Translation

3 And to the angel of the assembly in Sardis write: These things saith he that has the seven Spirits of God, and the seven stars: I know thy works, that thou hast a name that thou livest, and art dead.

² Be watchful, and strengthen the things that remain, which are about to die, for I have not found thy works complete before my God.

³ Remember therefore how thou hast received and heard, and keep [it] and repent. If therefore thou shalt not watch, I will come [upon thee] as a thief, and thou shalt not know at what hour I shall come upon thee.