Jacob vowed a vow, i.e. bound himself by a solemn promise or obligation. Compare Gen_14:22Ecc_5:4.
If God will be with me. He speaks not thus as if he doubted of the truth of God’s promises, or would, like a mercenary person, make a bargain with God, but rather supposeth that God will do this for him, as he had in effect promised, Gen_28:15, and thereupon obligeth himself to a grateful return to God for this mercy:
If God will be with me, & c., as he hath just now assured me he will; or, Seeing God will be with me, & c., for the Hebrew im doth not always imply a doubt, but rather a supposition, and is oft rendered seeing that, as Exo_20:25Num_36:41Sa_15:17Amo_7:2. And so the Greek particle answering to the Hebrew im is used, Mat_6:22Luk_11:34.
Bread; food convenient, as it is called, Pro_30:8, which is oft signified by the name of