Purpose of Rebuke

As previously mentioned, rebuke is needed to prepare the man of God for good works. Jesus suffered many unfounded rebukes which is why it is written that Jesus had to learn obedience from the things He suffered, Hebrews 5:8. Did Jesus sin and therefore deserve such rebukes and was therefore forced to repent? No, but He still suffered man's evil with long suffering just like His Father does so that people will not perish, 2 Peter 3:9. Yet because He had the eyes to see, He learned to not do the evil deeds that were done to Him. Hence, you will have trouble in this world because He had troubles.

"These things I have spoken to you, so that in Me you may have peace. In the world you have tribulation, but take courage; I have overcome the world." John 16:33 

Jesus suffered because man is the ruler of the world just as God said in Genesis 1:26 and because sin comes into the world via man not Satan, Romans 5:12. This is why Jesus said "woe to the world" and not "woe to Satan" in Matthew 18:7.

So, now compare this with what the writer of Hebrews says about the very purpose for rebuke:

You have not yet resisted to the point of shedding blood in your striving against sin; ⁵ and you have forgotten the exhortation which is addressed to you as sons, "MY SON, DO NOT REGARD LIGHTLY THE DISCIPLINE OF THE Lord, NOR FAINT WHEN YOU ARE REPROVED BY HIM; ⁶ FOR THOSE WHOM THE Lord LOVES HE DISCIPLINES, AND HE SCOURGES EVERY SON WHOM HE RECEIVES." ⁷ It is for discipline that you endure; God deals with you as with sons; for what son is there whom his father does not discipline? ⁸ But if you are without discipline, of which all have become partakers, then you are illegitimate children and not sons. ⁹ Furthermore, we had earthly fathers to discipline us, and we respected them; shall we not much rather be subject to the Father of spirits, and live? ¹⁰ For they disciplined us for a short time as seemed best to them, but He disciplines us for our good, so that we may share His holiness. Hebrews 12:4-10

The very point of shedding blood as a result of God's discipline for our sin is the ultimate point at which we fellowship in Christ's sufferings referred to as "scourges" in verse 6. This striving against sin is the very means by which we may be esteemed by God to share in His holiness. The Apostle Paul describes it this way:

Now I rejoice in my sufferings for your sake, and in my flesh I do my share on behalf of His body, which is the church, in filling up what is lacking in Christ's afflictions. Colossians 1:24

I have been crucified with Christ; and it is no longer I who live, but Christ lives in me; and the life which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself up for me. Galatians 2:20

For momentary, light affliction is producing for us an eternal weight of glory far beyond all comparison, 2 Corinthians 4:17

...that I may know Him and the power of His resurrection and the fellowship of His sufferings, being conformed to His death; ¹¹ in order that I may attain to the resurrection from the dead. Philippians 3:10-11

The purpose of rebuke from God breathed scriptures is to share in God's holiness. That holiness is only part of the bond of peace which results in God's testimony through us in the form of signs and wonders.

"And now, Lord, take note of their threats, and grant that Your bond-servants may speak Your word with all confidence, while You extend Your hand to heal, and signs and wonders take place through the name of Your holy servant Jesus." Acts 4:29-30

The statement found approval with the whole congregation; and they chose Stephen, a man full of faith and of the Holy Spirit, and Philip, Prochorus, Nicanor, Timon, Parmenas and Nicolas, a proselyte from Antioch. Acts 6:5

And Stephen, full of grace and power, was performing great wonders and signs among the people. Acts 6:8

who was declared the Son of God with power by the resurrection from the dead, according to the Spirit of holiness, Jesus Christ our Lord, Romans 1:4

God also testifying with them, both by signs and wonders and by various miracles and by gifts of the Holy Spirit according to His own will. Hebrews 2:4

The purpose of rebuke is to equip a person to share in God's holiness not to force them to repent the way we think they should behave. So, why do people still believe that reproach should feel good or it is not from God? The answer to this question is found in the age old fact that Satan couches little white lies in with feel good doctrines or platitudes and attitudes so that the lies will be accepted.