The second letter (to the Corinthians), as we know, is the ministers' letter! It tells us what a minister is from the Divine standpoint when the Cross does its work. Moses, the minister of God, is brought very much into view, ministering in the old covenant, declaring the thoughts of God, revealing the Divine mind. That is what a minister is. A minister, this word says, is one who shows forth the Divine thoughts, who manifests the mind of God. When Moses read the law, his face shone, the glory of God was expressed through him as God's servant, God's minister. That, mind you, was under the old covenant, the covenant of signs, the covenant of symbols, of types; yes, and a ministry of death and condemnation: and, says the Apostle, we have another ministry, and ministry is the shining forth of God in the face of Jesus Christ in our hearts. That is what a minister is; and let me put that simply, plainly.
There is no such thing in the New Testament as an official ministry as such. God has never, in this dispensation, appointed officials, as such, to be ministers. The ministry is a matter of a revelation of God in the face of Jesus Christ in the heart shining out, and what constitutes one a minister more than another is the measure of the revelation of Christ in the life; and we all ought to be ready to give place to that. It must be a revelation of God in your heart, in my heart, that constitutes us God's ministers.
The credentials of ministry are the shining of God's glory in the face of Jesus Christ in our heart, and anybody who has that can be a minister; and anybody who has not that has no right to call himself a minister. The Cross must strike at all ideas of ministry that are merely professional, which are anything other than spiritual. Spiritual gifts, spiritual revelation, spiritual knowledge, spiritual resources, spiritual riches, these alone constitute us ministers.