Genesis 26:5

because that Abraham obeyed My voice, and kept My charge, My commandments, My statutes, and My laws. Isaac was not to move down into Egypt, because the entire land of Canaan, including the land of the Philistines, was included in the blessing of Jehovah, and was eventually to be the possession of the descendants of Isaac, as the Lord had promised to Abraham with an oath, Genesis 22:16. But in addition to these temporal blessings, the descendants of Isaac according to the promise should also become the bearers of the Messianic hope, according to which all nations of the earth were to be blessed in that one Seed, in the Messiah. All this was a reward for the obedience of faith which Abraham had shown in keeping the charge of God, the special commission entrusted to him, His commandments or express orders, His statutes, certain prescriptions to cover specific cases, and His Law, the great doctrine of moral obligations as it applies to all men.