The first words of the chapter are the title or argument of the whole chapter: it is the book of the generations of Adam; it is the list or catalogue of the posterity of Adam, not of all, but only of the holy seed who were the substance thereof (Isa 6:13), and of whom, as concerning the flesh, Christ came (Rom 9:5), the names, ages, and deaths, of those that were the successors of the first Adam in the custody of the promise, and the ancestors of the second Adam. The genealogy begins with Adam himself. Here is,

I.His creation, Gen 5:1, Gen 5:2, where we have a brief rehearsal of what was before at large related concerning the creation of man. This is what we have need frequently to hear of and carefully to acquaint ourselves with. Observe here, 1. That God created man. Man is not his own maker, therefore he must not be his own master; but the Author of his being must be the director of his motions and the centre of them. 2. That there was a day in which God created man. He was not from eternity, but of yesterday; he was not the first-born, but the junior of the creation. 3. That God made him in his own likeness, righteous and holy, and therefore, undoubtedly, happy. Man's nature resembled the divine nature more than that of any of the creatures of this lower world. 4. That God created them male and female (Gen 5:2), for their mutual comfort as well as for the preservation and increase of their kind. Adam and Eve were both made immediately by the hand of God, both made in God's likeness; and therefore between the sexes there is not that great distance and inequality which some imagine. 5. That God blessed them. It is usual for parents to bless their children; so God, the common Father, blessed his. But earthly parents can only beg a blessing; it is God's prerogative to command it. It refers chiefly to the blessing of increase, not excluding other blessings. 6. That he called their name Adam. Adam signifies earth, red earth. Now, (1.) God gave him this name. Adam had himself named the rest of the creatures, but he must not choose his own name, lest he should assume some glorious pompous title. But God gave him a name which would be a continual memorandum to him of the meanness of his original, and oblige him to look unto the rock whence he was hewn and the hole of the pit whence he was digged, Isa 51:1. Those have little reason to be proud who are so near akin to dust. (2.) He gave this name both to the man and to the woman. Being at first one by nature, and afterwards one by marriage, it was fit they should both have the same name, in token of their union. The woman is of the earth earthy as well as the man.

II.The birth of his son Seth, Gen 5:3. He was born in the hundred and thirtieth year of Adam's life; and probably the murder of Abel was not long before. Many other sons and daughters were born to Adam, besides Cain and Abel, before this; but no notice is taken of them, because an honourable mention must be made of his name only in whose loins Christ and the church were. But that which is most observable here concerning Seth is that Adam begat him in his own likeness, after his image. Adam was made in the image of God; but, when he was fallen and corrupt, he begat a son in his own image, sinful and defiled, frail, mortal, and miserable, like himself; not only a man like himself, consisting of body and soul, but a sinner like himself, guilty and obnoxious, degenerate and corrupt. Even the man after God's own heart owns himself conceived and born in sin, Psa 51:5. This was Adam's own likeness, the reverse of that divine likeness in which Adam was made; but, having lost it himself, he could not convey it to his seed. Note, Grace does not run in the blood, but corruption does. A sinner begets a sinner, but a saint does not beget a saint.

III.His age and death. He lived, in all, nine hundred and thirty years, and then he died, according to the sentence passed upon him, To dust thou shalt return. Though he did not die in the day he ate forbidden fruit, yet in that very day he became mortal. Then he began to die; his whole life afterwards was but a reprieve, a forfeited condemned life; nay, it was a wasting dying life: he was not only like a criminal sentenced, but as one already crucified, that dies slowly and by degrees.

The book of the generations - ספר sepher, in Hebrew, which we generally translate book, signifies a register, an account, any kind of writing, even a letter, such as the bill of divorce. Here It means the account or register of the generations of Adam or his descendants to the five hundredth year of the life of Noah.

In the likeness of God made he him - This account is again introduced to keep man in remembrance of the heights of glory whence he bad fallen; and to prove to him that the miseries and death consequent on his present state were produced by his transgression, and did not flow from his original state. For, as he was created in the image of God, he was created free from natural and moral evil. As the deaths of the patriarchs are now to be mentioned, it was necessary to introduce them by this observation, in order to justify the ways of God to man.

This is the book of the generations of Adam,.... An account of persons born of him, or who descended from him by generation in the line of Seth, down to Noah, consisting of ten generations; for a genealogy of all his descendants is not here given, not of those in the line of Cain, nor of the collateral branches in the line of Seth, only of those that descended one from another in a direct line to Noah:

in the day that God created man, in the likeness of God made he him; this is repeated from Gen 1:27 to put in mind that man is a creature of God; that God made him, and not he himself; that the first man was not begotten or produced in like manner as his sons are, but was immediately created; that his creation was in time, when there were days, and it was not on the first of these, but on the sixth; and that he was made in the likeness of God, which chiefly lay in knowledge, righteousness, and holiness, and in dominion over the creatures.