Revelation 3:3 - Message to Sardis

1"To the angel of the church in Sardis write:
He who has the seven Spirits of God and the seven stars, says this: 'I know your deeds, that you have a name that you are alive, but you are dead.2'Wake up, and strengthen the things that remain, which were about to die; for I have not found your deeds completed in the sight of My God.3'So remember what you have received and heard; and keep it, and repent. Therefore if you do not wake up, I will come like a thief, and you will not know at what hour I will come to you.4'But you have a few people in Sardis who have not soiled their garments; and they will walk with Me in white, for they are worthy.5'He who overcomes will thus be clothed in white garments; and I will not erase his name from the book of life, and I will confess his name before My Father and before His angels.6'He who has an ear, let him hear what the Spirit says to the churches.'

New International Version (©1984)
Revelation 3:3
Remember, therefore, what you have received and heard; obey it, 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.

CROSS REF----

Matthew 24:43 But understand this: If the owner of the house had known at what time of night the thief was coming, he would have kept watch and would not have let his house be broken into.
Luke 12:39 But understand this: If the owner of the house had known at what hour the thief was coming, he would not have let his house be broken into.
1 Thessalonians 5:2 for you know very well that the day of the Lord will come like a thief in the night.
1 Thessalonians 5:4 But you, brothers, are not in darkness so that this day should surprise you like a thief.
2 Peter 3:10 But the day of the Lord will come like a thief. The heavens will disappear with a roar; the elements will be destroyed by fire, and the earth and everything in it will be laid bare.
Revelation 2:5 Remember the height from which you have fallen! Repent and do the things you did at first. If you do not repent, I will come to you and remove your lampstand from its place.
Revelation 3:2 Wake up! Strengthen what remains and is about to die, for I have not found your deeds complete in the sight of my God.
Revelation 16:15 "Behold, I come like a thief! Blessed is he who stays awake and keeps his clothes with him, so that he may not go naked and be shamefully exposed."
Revelation 22:7 "Behold, I am coming soon! Blessed is he who keeps the words of the prophecy in this book."