Genesis 15:13-16

Verse 13

Four hundred years - "Which began," says Mr. Ainsworth, "when Ishmael, son of Hagar, mocked and persecuted Isaac, Gen 21:9; Gal 4:29; which fell out thirty years after the promise, Gen 12:3; which promise was four hundred and thirty years before the law, Gal 3:17; and four hundred and thirty years after that promise came Israel out of Egypt, Exo 12:41."
Verse 14

And also that nation, etc. - How remarkably was this promise fulfilled, in the redemption of Israel from its bondage, in the plagues and destruction of the Egyptians, and in the immense wealth which the Israelites brought out of Egypt! Not a more circumstantial or literally fulfilled promise is to be found in the sacred writings.
Verse 15

Thou shalt go to thy fathers in peace - This verse strongly implies the immortality of the soul, and a state of separate existence. He was gathered to his fathers - introduced into the place where separate spirits are kept, waiting for the general resurrection. Two things seem to be distinctly marked here:

1. The soul of Abram should be introduced among the assembly of the first-born; Thou shalt go to thy fathers in peace.

2. His body should be buried after a long life, one hundred and seventy-five years, Gen 25:7. The body was buried; the soul went to the spiritual world, to dwell among the fathers - the patriarchs, who had lived and died in the Lord. See note on Gen 25:8.
Verse 16

In the fourth generation - In former times most people counted by generations, to each of which was assigned a term of years amounting to 20, 25, 30, 33, 100, 108, or 110; for the generation was of various lengths among various people, at different times. It is probable that the fourth generation here means the same as the four hundred years in the preceding verse. Some think it refers to the time when Eleazar, the son of Aaron, the son of Amram, the son of Kohath, came out of Egypt, and divided the land of Canaan to Israel, Jos 14:1. Others think the fourth generation of the Amorites is intended, because it is immediately added, The iniquity of the Amorites is not yet full; but in the fourth generation they should be expelled, and the descendants of Abram established in their place. From these words we learn that there is a certain pitch of iniquity to which nations may arrive before they are destroyed, and beyond which Divine justice does not permit them to pass.
Copyright information for Clarke