The secret things are those things that God has hidden from human understanding or comprehension. They include some of the deep things of God – the mysteries of the kingdom (Dan. 12:9; Mk. 13:32; 1Cor. 2:9).

The revealed things on the other hand are those things which were hitherto kept secret by the LORD, which He later opened to the understanding of men. They include divine provisions and treasures of heaven. (1Cor. 2:9-12; Eph. 1:17-20).  (1Thess. 2:13)

When we fail to appreciate the revelations of God, we can hardly know the value thereof. Today, the LORD will have us appreciate very highly, all the revelations of His Word, as very great treasures. The words/promises will promptly transform to treasures for those who appreciate them.