Why do you pass judgment on your brother? Or you, why do you despise your brother? For we will all stand before the judgment seat of God; for it is written,
“As I live, says the Lord, every knee shall bow to me,
and every tongue shall confess to God.”
So then each of us will give an account of himself to God.
Romans 14:10-12 English Standard Version (ESV)
But thou, why dost thou, etc. …It is an unreasonable boldness in any one to assume the power to judge his brother, since by taking such a liberty he robs Christ the Lord of the power which He alone has received from the Father.
As I live, etc. …All flesh ought to be humbled while expecting that judgment; and this is expressed by the bending of the knee. …This prophecy …is far from being completed and will not be so until the day of the last resurrection shall shine forth, when Christ’s enemies shall be laid prostrate, that they may become his footstool. But this cannot be except the Lord shall …ascend his tribunal to judge the living and the dead; for all judgment in heaven and on earth has been given to Him by the Father.
Every tongue shall swear to me. As an oath [this] is a kind of divine worship. …All men should not only acknowledge his majesty, but also make a confession of obedience, both by the mouth and by the external gesture of the body, which he has designated by the bowing of the knee.
Every one of us, etc. This conclusion invites us to humility and lowliness of mind: and hence he immediately draws this inference, — that we are not to judge one another; for it is not lawful for us to usurp the office of judging, who must ourselves submit to be judged and to give an account.
What, then, should be our response to this impending Judgment?
O God, you know my folly;
the wrongs I have done are not hidden from you.
Psalm 69:5 English Standard Version (ESV)