Genesis 31:3

And the Lord said unto Jacob, Return - and I will be with thee - I will take the same care of thee in thy return, as I took of thee on thy way to this place. The Targum reads, My Word shall be for thy help, see Genesis 15:1. A promise of this kind was essentially necessary for the encouragement of Jacob, especially at this time; and no doubt it was a powerful means of support to him through the whole journey; and it was particularly so when he heard that his brother was coming to meet him, with four hundred men in his retinue, Genesis 32:6. At that time he went and pleaded the very words of this promise with God, Genesis 32:9.

31:3 The Lord said unto Jacob, Return and I will be with thee — though Jacob had met with very hard usage, yet he would not quit his place 'till God bid him. He came thither by orders from heaven, and there he would slay 'till he was ordered back. The direction he had from heaven is more fully related in the account he gives of it to his wives, where he tells them of the dream he had about the cattle, and the wonderful increase of those of his colour; and how the angel of God in that dream instructed him that it was not by chance, nor by his own policy, that he obtained that great advantage but by the providence of God, who had taken notice of the hardships Laban had put upon him, and in performance of his promise.