Jesus Christ is laying down this principle – Do what you know you must do, now, and do it quickly; if you do not, the inevitable process will begin to work and you will have to pay to the last farthing in pain and agony and distress. God’s laws are unalterable; there is no escape from them. The teaching of Jesus goes straight to the way we are made up.
To see that my adversary gives me my rights is natural; but Jesus says that it is a matter of eternal and imperative importance to me that I pay my adversary what I owe him. From our Lord’s standpoint it does not matter whether I am defrauded or not; what does matter is that I do not defraud. Am I insisting on my rights, or am I paying what I owe from Jesus Christ’s standpoint?
Do the thing quickly, bring yourself to judgment now. In moral and spiritual matters, you must do it at once; if you do not, the inexorable process will begin to work. God is determined to have His child as pure and clean and white as driven snow, and as long as there is disobedience in any point of His teaching, He will prevent none of the working of His spirit. Our insistence in proving that we are right is nearly always an indication that there has been some point of disobedience. No wonder the Spirit so strongly urges to keep steadfastly in the light!
"Agree with thine adversary quickly." Have you suddenly turned a corner in any relationship and found that you had anger in your heart? Confess it quickly, quickly put it right before God, be reconciled to that one – do it now.