Is Hard Rebuke from God?

Most Christians are familiar with this passage:
All Scripture is inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness; so that the man of God may be adequate, equipped for every good work. 2 Timothy 3:16-17
However, because of verses like Ephesians 4:1-6 and Matthew 11:28-30, people tend to assume that hard rebuke is not from God. 
Therefore I, the prisoner of the Lord, implore you to walk in a manner worthy of the calling with which you have been called, with all humility and gentleness, with patience, showing tolerance for one another in love, being diligent to preserve the unity of the Spirit in the bond of peace. There is one body and one Spirit, just as also you were called in one hope of your calling; one Lord, one faith, one baptism, one God and Father of all who is over all and through all and in all. Ephesians 4:1-6
 ...and 
"Come to Me, all who are weary and heavy-laden, and I will give you rest. "Take My yoke upon you and learn from Me, for I am gentle and humble in heart, and YOU WILL FIND REST FOR YOUR SOULS. "For My yoke is easy and My burden is light." Matthew 11:28-30
This series of articles is about reconciling God's kindness which leads us to repentance with His hard words which He Himself calls a hammer for breaking stones. Topics to be covered include:


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