Then i will also remember my covenant with Jacob,.... Would fulfil and make good all that he had promised in covenant with Jacob, and his posterity: the account begins with him, and rises upwards to Abraham, whereas it usually begins with Abraham, and descends to Jacob; no sufficient reason is given for this alteration, though several are attempted by the Jewish writers (e):

and also my covenant with Isaac, and also my covenant with Abraham will I remember; which chiefly respects the multiplication of their seed, the continuance of them, and the Messiah springing from them; which is the mercy promised to these fathers, and the principal part of the covenant made with them, and which was remembered and performed when God visited and redeemed his people by him, Luke 1:68,

and I will remember the land; the land of Judea, and return the Jews to it, and make it fruitful, after he had given it rest from tillage for many years, which was fulfilled at their return from the captivity of Babylon.

(e) Saadiah Gaon apud Aben Ezram in loc. Pesikta & alii.

Then will I remember my covenant with Jacob, and also my covenant with Isaac, and also my covenant with Abraham will I remember; and I will remember the land.

26:42 I will remember my covenant - So as to make good all that I have promised in it. For words of knowledge or remembrance in scripture, commonly denote affection and kindness. I will remember the land - Which now seems to be forgotten and despised, as if I had never chosen it to be the peculiar place of my presence and blessing.

26:40-46 Among the Israelites, persons were not always prosperous or afflicted according to their obedience or disobedience. But national prosperity was the effect of national obedience, and national judgments were brought on by national wickedness. Israel was under a peculiar covenant. National wickedness will end in the ruin of any people, especially where the word of God and the light of the gospel are enjoyed. Sooner or later, sin will be the ruin, as well as the reproach, of every people. Oh that, being humbled for our sins, we might avert the rising storm before it bursts upon us! God grant that we may, in this our day, consider the things which belong to our eternal peace.