1 Corinthians 2:7

But we speak God's wisdom in a mystery, even the wisdom that hath been hidden, which God foreordained before the worlds unto our glory.

Mystery ... The mystery of the Christian religion far surpasses anything affected in the mysteries of the Greeks, and notably in the fact of its having been foreordained in God's purpose even before the creation of the world. The usual definition of mystery, to the effect of its being something once unknown now revealed, while true enough, is inadequate. Some elements of the mystery of God will not even be finished until "the days of the voice of the seventh angel" (Revelation 10:7). Russell said that:

The mystery in the scriptures denotes (a) something above the ordinary human understanding (Mark 4:11); (b) something formerly hidden in the counsel of God, but afterward revealed as a plan understood by its own fulfillment; and (c) as something always accompanied by vastness depth and power.[20]

THE MYSTERY

The New Testament refers to many mysteries: of Christ and his church (Ephesians 5:32), of lawlessness (2 Thessalonians 2:7), of seven stars and seven candlesticks (Revelation 1:20), of the resurrection (1 Corinthians 15:51) of the blindness of Israel (Romans 11:25), of the harlot church (Revelation 17:7), and of the kingdom of heaven (Matthew 13:11).

However, it is not to any of these, specifically, that reference is made here. There is a greater and more comprehensive mystery containing all of these and exceeding them. This greater mystery is often mentioned in the New Testament Scriptures where it is called great (1 Timothy 3:16), the mystery (Romans 16:25), the mystery of God's will (Ephesians 1:9), the mystery of Christ (Ephesians 3:4), the mystery of the gospel (Ephesians 6:1), the mystery of God (Colossians 2:3), the mystery of the faith (1 Timothy 3:9), and the mystery of godliness (1 Timothy 3:16) - it is to that mystery that Paul refers here.

It is this mystery which dominates the sixty-six books of the Bible. God announced the mystery in Eden; Satan's part in it was revealed; the mystery deepened in the death of Abel; the mystery was progressively unfolded verbally in the Old Testament prophecies, systematically prefigured in the types and shadows of the Mosaic dispensation, explicitly heralded in the lives of great typical men of the old covenant, and came to crisis on the cross of Christ, where in its great essentials, it was fully unveiled. There are many corollaries of the central mystery; and the ultimate goals of it are projected into the future. A six-line summary of this "great mystery" is in 1 Timothy 3:16. Running throughout the entire Bible is the record of the "mystery of lawlessness" which is antagonistic to the true mystery, but which is to be resolved finally in the overthrow of Satan and the purging of wickedness out of God's universe.[21]

Unto our glory ... highlights the benevolent purpose of God in the amazing and overwhelmingly comprehensive work of the Father looking to human redemption.

[20] John William Russell, Compact Commentary on the New Testament (Grand Rapids: Baker Book House, 1964), p. 406.

[21] The Mystery of Redemption is more elaborately discussed in a book of that title authored by the writer of this series of commentaries, James Burton Coffman, The Mystery of Redemption (Austin, Texas: Firm Foundation Publishing House, 1976).