And they were exceeding sorrowful, and began every one of them to say unto him, Lord, is it I?
And they began to be sorrowful, and to say unto him one by one, [Is] it I? and another [said, Is] it I?
1 Corinthians 11:27
Wherefore whosoever shall eat this bread, and drink [this] cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord.
1 Corinthians 11:28
But let a man examine himself, and so let him eat of [that] bread, and drink of [that] cup.
2 Corinthians 13:5
Examine yourselves, whether ye be in the faith; prove your own selves. Know ye not your own selves, how that Jesus Christ is in you, except ye be reprobates?
For if a man think himself to be something, when he is nothing, he deceiveth himself.
But let every man prove his own work, and then shall he have rejoicing in himself alone, and not in another.
Thus saith the LORD of hosts; Consider your ways.
Stand in awe, and sin not: commune with your own heart upon your bed, and be still. Selah.
Who can understand [his] errors? cleanse thou me from secret [faults].
Examine me, O LORD, and prove me; try my reins and my heart.
I call to remembrance my song in the night: I commune with mine own heart: and my spirit made diligent search.
I thought on my ways, and turned my feet unto thy testimonies.
Search me, O God, and know my heart: try me, and know my thoughts:
And see if [there be any] wicked way in me, and lead me in the way everlasting.
The heart [is] deceitful above all [things], and desperately wicked: who can know it?
How many [are] mine iniquities and sins? make me to know my transgression and my sin.