The place in which the covenant was made between Isaac and the Philistines was called Shib'ah, for two reasons, because an oath was "sworn" there, and as a memorial of the fact that even the heathen are bound to observe the "seven" Noachian laws.

For all the wonders executed by God for Isaac, and all the good he enjoyed throughout his life, he is indebted to the merits of his father. For his own merits he will be rewarded in future. On the great day of judgment it will be Isaac who will redeem his descendants from Gehenna. On that day the Lord will speak to Abraham, "Thy children have sinned," and Abraham will make reply, "Then let them be wiped out, that Thy Name be sanctified." The Lord will turn to Jacob, thinking that he who had suffered so much in bringing his sons to manhood's estate would display more love for his posterity. But Jacob will give the same answer as Abraham. Then God will say: "The old have no understanding, and the young no counsel. I will now go to Isaac. Isaac," God will address him, "thy children have sinned," and Isaac will reply: "O Lord of the world, sayest Thou my children, and not THINE? When they stood at Mount Sinai and declared themselves ready to execute all Thy bidding before even they heard it, Thou didst call Israel 'My first-born,' and now they are MY children, and not THINE! Let us consider. The years of a man are seventy. From these twenty are to be deducted, for Thou inflictest no punishment upon those under twenty. Of the fifty years that are left, one-half are to be deducted for the nights passed in sleep. There remain only twenty-five years, and these are to be diminished by twelve and a half, the time spent in praying, eating, and attending to other needs in life, during which men commit no sins. That leaves only twelve years and a half. If Thou wilt take these upon Thyself, well and good. If not, do Thou take one-half thereof, and I will take the other half." The descendants of Isaac will then say, "Verily, thou art our true father!" But he will point to God, and admonish them, "Nay, give not your praises to me, but to God alone," and Israel, with eyes directed heavenward, will say, "Thou, O Lord, art our Father; our Redeemer from everlasting is Thy name."