Mark 13:36
Lest coming suddenly he find you sleeping.
Cross-references
In Mark 14:37, Jesus finds the disciples asleep, fulfilling the warning that sudden arrival would catch them unprepared.
In Mark 14:40, the disciples are again found sleeping, emphasizing their repeated failure to stay alert.
In Isaiah 56:10, watchmen are rebuked for sleeping and loving slumber — the same failure to stay alert that Jesus warns against.
In Matthew 24:48-51, the wicked servant who thinks the master delays is caught by surprise — exactly the sudden coming warned about here.
In Matthew 25:5, the virgins all slumber and sleep while waiting for the bridegroom — a direct parallel to being found asleep at the Lord's coming.
In Luke 21:34, Jesus warns against hearts weighed down with cares so that the day does not come on you suddenly — the same admonition.
In Romans 13:11-14, Paul calls believers to awake from sleep because salvation is nearer — a direct echo of Jesus' call to vigilance.
In Ephesians 5:14, the command 'Awake, thou that sleepest' parallels the spiritual alertness urged here against being found asleep.
In 1 Thessalonians 5:6, Paul directly says 'let us not sleep, but watch and be sober' — the exact same charge as in this warning.
Revelation 3:3 echoes the same warning: Christ comes like a thief, and failure to wake brings sudden judgment.
In Luke 22:45, Jesus finds the disciples sleeping for sorrow — a similar rebuke for failing to watch and pray in a critical moment.