God’s program for the earth is identified as prophecy, while His program for the heavenlies is known as the Mystery. A program is defined as “…a plan or procedure for dealing with some matter.” For instance, we might watch a documentary of american history followed by a documentary on wildlife. Both are programs, but they deal with two entirely different subjects. The same is true with God’s Word. The theme of God’s Prophetic program embraces Christ’s reign upon the earth in the future millennial kingdom. On the other hand, the Mystery points to our exaltation with Christ in the heavenlies.
Just as the great Continental Divide separates the rivers flowing toward the Atlantic from those flowing toward the Pacific, in like manner the Word of god is divided into two parts—Prophecy and Mystery. Sad to say, many dear saints have proceeded down the wrong side of the Continental Divide of Holy Scripture. they are peacefully floating down the Prophetic river unaware that a dangerous falls lie ahead. indeed, they will be saved because the Lord cannot deny Himself, but they will suffer terrible loss at the Judgment Seat of Christ (1 Cor. 3:9-15). Those whose eyes have been open to see the Mystery are proceeding down the proper side of the divide. They should be prepared, however, to shoot the rapids, inasmuch as those who stand for the truth of Paul’s gospel will face almost unbelievable opposition. Thankfully, these waters flow into an ocean of eternal reward at journey’s end. source