1 Thessalonians 5:4

But you, brethren, are not in darkness, that daylight should surprise you like a thief;

1 John 2:8

And yet I *am* giving you a new command, for such it really is, so far as both He and you are concerned: because the darkness is now passing away and the light, the true light, is already beginning to shine.

Acts 26:18

that they may turn from darkness to light and from the obedience to Satan to God, in order to receive forgiveness of sins and an inheritance among those who are sanctified through faith in Me.'

Romans 13:11-13

Carry out these injunctions because you know the critical period at which we are living, and that it is now high time, to rouse yourselves from sleep; for salvation is now nearer to us than when we first became believers.

Colossians 1:13

It is God who has delivered us out of the dominion of darkness, and has transferred us into the Kingdom of His dearly-loved Son,

1 Peter 2:9-10

But you are a chosen race, a priesthood of kingly lineage, a holy nation, a people belonging specially to God, that you may make known the perfections of Him who called you out of darkness into His marvellous light.

2 Peter 3:10

The day of the Lord will come like a thief--it will be a day on which the heavens will pass away with a rushing noise, the elements be destroyed in the fierce heat, and the earth and all the works of man be utterly burnt up.

Revelation 3:3

Be mindful, therefore, of the lessons you have received and heard. Continually lay them to heart, and repent. If, however, you fail to rouse yourself and keep awake, I shall come upon you suddenly like a thief, and you will certainly not know the hour at which I shall come to judge you.

Treasury of Scripture Knowledge

Summary

But ye, brethren, are not in darkness, that that day should overtake you as a thief.

General references

Bible References

Are

Romans 13:11
Carry out these injunctions because you know the critical period at which we are living, and that it is now high time, to rouse yourselves from sleep; for salvation is now nearer to us than when we first became believers.
Colossians 1:13
It is God who has delivered us out of the dominion of darkness, and has transferred us into the Kingdom of His dearly-loved Son,
1 Peter 2:9
But you are a chosen race, a priesthood of kingly lineage, a holy nation, a people belonging specially to God, that you may make known the perfections of Him who called you out of darkness into His marvellous light.
1 John 2:8
And yet I *am* giving you a new command, for such it really is, so far as both He and you are concerned: because the darkness is now passing away and the light, the true light, is already beginning to shine.

General references

Luke 12:38
And whether it be in the second watch or in the third that He comes and finds them so, blessed are they.