Believers are called to the role of reconciliation, forgiveness, loving our enemies, and turning the other cheek by being humble and Spirit-filled. Also, the genuinely humble believer will not be timid, but bold.
Part of being bold because of the moving of the Holy Spirit within us is to proclaim the truth even if it takes the form of a rebuke. We are told to love our enemies, but we must not have unity with professing believers who are mired in heresy. On the other hand, those in apostasy must be rebuked in love with the goal of restoring them to fellowship and unity within God’s truth.
Much of the Bible is prophetic in nature. A large part of those prophecies take the form of God rebuking His people for their apostasy as well as declaring His coming judgment upon the world for their rebellion against Him and His ways.
One such prophet was Ezekiel. His book opens with him witnessing the glory of God in a magnificent vision. His account of it in Ezekiel 1 is utterly amazing. It is obvious that when he wrote it that he was struggling to describe the indescribable. In v26-28 Ezekiel describes his reaction to seeing this.