Exodus 4:6-7

Exo. 4:6, 7. "And the Lord said furthermore unto him, Put now thine hand into thy bosom. And he put his hand into his bosom: and when he took it out, behold, his hand was leprous as snow. And he said, Put thine hand into thy bosom again. And he put his hand into his bosom again; and plucked it out of his bosom, and, behold, it was turned again as the other flesh." This sign is much like the foregoing, of casting the rod on the ground, and its becoming a serpent; and much the same thing is signified, but only more is signified in this latter sign than in the former. By Moses's hand is represented the hand or arm of the Lord, which often in the Old Testament signifies the Messiah. By God's plucking his hand out of his bosom, is meant his appearing for the salvation of his people. While God long forbears to appear for his churches salvation, while they are longing and waiting for him, he as it were hides his hand in his bosom; Psalms 74:11. "Why withdrawest thou thine hand, even thy right hand? Pluck it out of thy bosom." There are remarkable appearances of God in the world for the salvation of his people, which are both by the coming of the Messiah, both of which are long wished and waited for before they are accomplished. The first is God's appearing in the world for the redemption of the church, by laying the foundation of her salvation in the first coming of the Messiah, after the church had long waited for him, while God had hid his hand in his bosom. At length the arm of the Lord is made bare, the Messiah appears, but in such a manner that it was to the surprise and astonishment of those that saw him - many were astonished at him, his visage was so marred more than any man, and his form more than the sons of men. They were offended in him. He had no form or comeliness, and when they saw him, there was no beauty that they should desire him. He appears in the form of sinful flesh. He was as it were diseased with the leprosy, because himself took our infirmities, and bore our sicknesses. He was made sin for us, as though he had been all over leprous or sinful. God's second remarkable appearance will be in the Messiah's second coming for the actual salvation of his people, when he will appear without sin unto salvation, without the leprosy of our sin, and will appear in that glory that he had with the Father before his humiliation, which he emptied himself of at his first coming. God having answered his prayer in glorifying him with his own self, with the glory he had with him before the world was: as Moses's hand, the second time he plucked it out of his bosom, was restored as it was at first. This type of the redemption of the Messiah was fitly given on this occasion, and as a sign of the redemption of the children of Israel out of Egypt, and the carrying them through the Red sea, the wilderness, and Jordan, into Canaan, because the redemption of the Messiah, both fundamental and actual, was variously represented and presignified in that great work of God.