If thou wilt diligently hearken - What is contained in this verse appears to be what is intended by the statute and ordinance mentioned in the preceding: If thou wilt diligently hearken unto the voice of the Lord thy God, and wilt do that which is right in his sight, and wilt give ear to his commandments, and keep all his statutes, I will put none of these diseases upon thee, etc. This statute and ordinance implied the three following particulars:

1. That they should acknowledge Jehovah for their God, and thus avoid all idolatry.

2. That they should receive his word and testimony as a Divine revelation, binding on their hearts and lives, and thus be saved from profligacy of every kind, and from acknowledging the maxims or adopting the customs of the neighboring nations.

3. That they should continue to do so, and adorn their profession with a holy life. T

hese things being attended to, then the promise of God was, that they should have none of the diseases of the Egyptians put on them; that they should be kept in a state of health of body and peace of mind; and if at any time they should be afflicted, on application to God the evil should be removed, because he was their healer or physician - I am the Lord that healeth thee. That the Israelites had in general a very good state of health, their history warrants us to believe; and when they were afflicted, as in the case of the fiery serpents, on application to God they were all healed. The Targum of Jonathan ben Uzziel states that the statutes which Moses received at this time were commandments concerning the observance of the Sabbath, duty to parents, the ordinances concerning wounds and bruises, and the penalties which sinners should incur by transgressing them. But it appears that the general ordinances already mentioned are those which are intended here, and this seems to be proved beyond dispute by Jeremiah 7:22, Jeremiah 7:23 : "For I spake not unto your fathers, nor commanded them in the day that I brought them out of the land of Egypt, concerning burnt-offerings or sacrifices: but this thing commanded I them, saying, Obey my voice, and I will be your God, and ye shall be my people; walk ye in all the ways that I have commanded you, that it may be well unto you."

And said, if thou wilt diligently hearken to the voice of the Lord thy God,.... By this and the following words, they are prepared to expect a body of laws to be given unto them, as the rule of their future conduct; and though they were delivered from the rigorous laws, bondage, and oppression of the Egyptians, yet they were not to be without law to God, their King, Lord, and Governor, whose voice they were to hearken to in all things he should direct them in:

and wilt do that which is right in his sight; which he shall see and order as fit to be done, and which was not to be disputed and contradicted by them:

and wilt give ear to his commandments, and keep all his statutes; whether moral, ceremonial, or judicial, even all that either had been made known to them, or should be hereafter enjoined them; and this at Mount Sinai, where they received a body of laws, they promised to do; namely, both to hear and to obey, Exodus 24:3.

I will put none of these diseases upon thee, which I have brought upon the Egyptians; in any of the plagues inflicted on them, which they were witnesses of; from these they should be preserved, if obedient, but if not they must expect them, or what was similar to them, see Deuteronomy 28:27,

for I am the Lord that healeth thee; both in body and soul; in body, by preserving from diseases, and by curing them when afflicted with them; and in soul, by pardoning their iniquities, which, in Scripture, is sometimes signified by healing, see Psalm 103:3.

And said, If thou wilt diligently hearken to the voice of the LORD thy God, and wilt do that which is {o} right in his sight, and wilt give ear to his commandments, and keep all his statutes, I will put none of these diseases upon thee, which I have brought upon the Egyptians: for I am the LORD that healeth thee.

(o) Which is, to do only what God commanded.

15:22-27 In the wilderness of Shur the Israelites had no water. At Marah they had water, but it was bitter; so that they could not drink it. God can make bitter to us that from which we promise ourselves most, and often does so in the wilderness of this world, that our wants, and disappointments in the creature, may drive us to the Creator, in whose favour alone true comfort is to be had. In this distress the people fretted, and quarrelled with Moses. Hypocrites may show high affections, and appear earnest in religious exercises, but in the time of temptation they fall away. Even true believers, in seasons of sharp trial, will be tempted to fret, distrust, and murmur. But in every trial we should cast our care upon the Lord, and pour out our hearts before him. We shall then find that a submissive will, a peaceful conscience, and the comforts of the Holy Ghost, will render the bitterest trial tolerable, yea, pleasant. Moses did what the people had neglected to do; he cried unto the Lord. And God provided graciously for them. He directed Moses to a tree which he cast into the waters, when, at once, they were made sweet. Some make this tree typical of the cross of Christ, which sweetens the bitter waters of affliction to all the faithful, and enables them to rejoice in tribulation. But a rebellious Israelite shall fare no better than a rebellious Egyptian. The threatening is implied only, the promise is expressed. God is the great Physician. If we are kept well, it is he that keeps us; if we are made well, it is he that recovers us. He is our life and the length of our days. Let us not forget that we are kept from destruction, and delivered from our enemies, to be the Lord's servants. At Elim they had good water, and enough of it. Though God may, for a time, order his people to encamp by the bitter waters of Marah, that shall not always be their lot. Let us not faint at tribulations.