וְהִנֵּ֨ה אָנֹכִ֜י עִמָּ֗ךְ וּשְׁמַרְתִּ֙יךָ֙ בְּכֹ֣ל אֲשֶׁר־תֵּלֵ֔ךְ וַהֲשִׁ֣בֹתִ֔יךָ אֶל־הָאֲדָמָ֖ה הַזֹּ֑את כִּ֚י לֹ֣א אֶֽעֱזָבְךָ֔ עַ֚ד אֲשֶׁ֣ר אִם־עָשִׂ֔יתִי אֵ֥ת אֲשֶׁר־דִּבַּ֖רְתִּי לָֽךְ׃
And, behold, I am with thee, and will keep thee whithersoever thou goest, and will bring thee back into this land; for I will not leave thee, until I have done that which I have spoken to thee of.’
Rashi on Genesis
אנכי עמך I AM WITH THEE — God promised him this because he was in terror of Esau and Laban.
Sforno on Genesis
כי לא אעזבך, when I said that after the exile you will expand in all directions of the globe, know no boundaries, this is possible only because even during the long years of exile I did not abandon you, as stated explicitly in Leviticus 26,44 לא מאסתים ולא געלתים, “I will not have rejected them, nor will I have abhorred them.”