1 Corinthians 3:13

the true character of each individual's work will become manifest. For the day of Christ will disclose it, because that day is soon to come upon us clothed in fire, and as for the quality of every one's work-- the fire is the thing which will test it.

Ephesians 5:13

But everything can be tested by the light and thus be shown in its true colors; for whatever shines of itself is light.

1 Thessalonians 5:5

for all of you are sons of Light and sons of the day. We belong neither to the night nor to darkness.

Treasury of Scripture Knowledge

Summary

And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day.

Bible References

Day, and

1 Corinthians 3:13
the true character of each individual's work will become manifest. For the day of Christ will disclose it, because that day is soon to come upon us clothed in fire, and as for the quality of every one's work-- the fire is the thing which will test it.
Ephesians 5:13
But everything can be tested by the light and thus be shown in its true colors; for whatever shines of itself is light.
1 Thessalonians 5:5
for all of you are sons of Light and sons of the day. We belong neither to the night nor to darkness.