Leprous - The instantaneous production and cure of the most malignant and subtle disease known to the Israelites was a sign of their danger if they resisted the command, and of their deliverance if they obeyed it. The infliction and cure were always regarded as special proofs of a divine intervention.

His hand was leprous as snow - That is, the leprosy spread itself over the whole body in thin white scales; and from this appearance it has its Greek name λεπρα, from λεπις, a scale. Dr. Mead says, "I have seen a remarkable case of this in a countryman, whose whole body was so miserably seized with it, that his skin was shining as if covered with snow; and as the surfuraceous scales were daily rubbed off, the flesh appeared quick or raw underneath." The leprosy, at least among the Jews, was a most inveterate and contagious disorder, and deemed by them incurable. Among the heathens it was considered as inflicted by their gods, and it was supposed that they alone could remove it. It is certain that a similar belief prevailed among the Israelites; hence, when the king of Syria sent his general Naaman, to the king of Israel to cure him of his leprosy, he rent his clothes, saying, Amos I God, to kill and to make alive, that this man doth send unto me to recover a man of his leprosy? 2 Kings 5:7. This appears, therefore, to be the reason why God chose this sign, as the instantaneous infliction and removal of this disease were demonstrations which all would allow of the sovereign power of God. We need, therefore, seek for no other reasons for this miracle: the sole reason is sufficiently obvious.

And the Lord said furthermore unto him,.... Continued his discourse, and gave him another sign:

put now thine hand into thy bosom. And he put his hand into his bosom; within his coat, under that part of the garment next to his breast:

and when he took it out, behold, his hand was leprous as snow; that is, white as snow, as the Targums of Onkelos and Jonathan, through the leprosy that was upon it; it was a leprosy of the white sort, and which is reckoned the worst and most difficult to be cured, see Leviticus 13:3. It is highly probable that this gave rise to the story told by several Heathen writers, as Manetho (m), Lysimachus (n), Trogus (o), and Tacitus (p), that Moses and the Israelites were drove out of Egypt by the advice of an oracle, because they had the leprosy, itch, and other impure diseases upon them.

(m) Apud Joseph. contr. Apion. l. 1. c. 26. (n) Apud. ib. c. 34. (o) Justin e Trogo, l. 36. c. 2.((p) Hist. l. 5. c. 3.

The Second Sign. - Moses' hand became leprous, and was afterwards cleansed again. The expression כּשּׁלג מצרעת, covered with leprosy like snow, refers to the white leprosy (vid., Leviticus 13:3). - "Was turned again as his flesh;" i.e., was restored, became healthy, or clean like the rest of his body. So far as the meaning of this sign is concerned, Moses' hand has been explained in a perfectly arbitrary manner as representing the Israelitish nation, and his bosom as representing first Egypt, and then Canaan, as the hiding-place of Israel. If the shepherd's staff represented Moses' calling, the hand was that which directed or ruled the calling. It is in the bosom that the nurse carried the sucking child (Numbers 11:12), the shepherd the lambs (Isaiah 40:11), and the sacred singer the many nations, from whom he has suffered reproach and injury (Psalm 89:50). So Moses also carried his people in his bosom, i.e., in his heart: of that his first appearance in Egypt was a proof (Exodus 2:11-12). But now he was to set his hand to deliver them from the reproach and bondage of Egypt. He put (הביא) his hand into his bosom, and his hand was covered with leprosy. The nation was like a leper, who defiled every one that touched him. The leprosy represented not only "the servitude and contemptuous treatment of the Israelites in Egypt" (Kurtz), but the ἀσέβεια of the Egyptians also, as Theodoret expresses it, or rather the impurity of Egypt in which Israel was sunken. This Moses soon discovered (cf. Exodus 5:17.), and on more than one occasion afterwards (cf. Numbers 11); so that he had to complain to Jehovah, "Wherefore hast Thou afflicted Thy servant, that Thou layest the burden of all this people upon me?...Have I conceived all this people, that Thou shouldest say to me, Carry them in thy bosom?" (Numbers 11:11-12). But God had the power to purify the nation from this leprosy, and would endow His servant Moses with that power. At the command of God, Moses put his hand, now covered with leprosy, once more into his bosom, and drew it out quite cleansed. This was what Moses was to learn by the sign; whilst Israel also learned that God both could and would deliver it, through the cleansed hand of Moses, from all its bodily and spiritual misery. The object of the first miracle was to exhibit Moses as the man whom Jehovah had called to be the leader of His people; that of the second, to show that, as the messenger of Jehovah, he was furnished with the necessary power for the execution of this calling. In this sense God says, in Exodus 4:8, "If they will not hearken to the voice of the first sign, they will believe the voice of the latter sign." A voice is ascribed to the sign, as being a clear witness to the divine mission of the person performing it. (Psalm 105:27).

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.

4:6 His hand was leprous, as snow - For whiteness. This signified, That Moses, by the power of God, should bring sore diseases upon Egypt, that at his prayer they should be removed. And that whereas the Israelites in Egypt were become leprous, polluted by sin, and almost consumed by oppression, by being taken into the bosom of Moses they should be cleansed and cured.

[1] Put now thine hand

The sign of leprosy. The heart ("bosom") stands for what we are, the hand for what we do. What we are, that ultimately we do. It is a sign of Lk 6:43-45. The two signs, rod and hand, speak of preparation for service:

(1) consecration--our capacity taken up for God;

(2) the hand that holds the rod of God's power must be a cleansed hand swayed by a new heart.

6. Put now thine hand into thy bosom-the open part of his outer robe, worn about the girdle.

4:1-9 Moses objects, that the people would not take his word, unless he showed them some sign. God gives him power to work miracles. But those who are now employed to deliver God's messages to men, need not the power to work miracles: their character and their doctrines are to be tried by that word of God to which they appeal. These miracles especially referred to the miracles of the Lord Jesus Christ. It belonged to Him only, to cast the power of the devil out of the soul, and to heal the soul of the leprosy of sin; and so it was for Him first to cast the devil out of the body, and to heal the leprosy of the body.