Luke 12:38

And if he shall come in the second watch, or come in the third watch, and find them so, blessed are those servants.

Cross-references

Matthew 25:6 uses the same midnight arrival motif — the bridegroom's cry parallels the master coming in the night watch.

1 Thessalonians 5:4 assures believers they are not in darkness, so the day won't surprise them like a thief — reinforcing the readiness theme.