Jacob is speaking to God in the third person. This can be stated in the second person. Alternate translation: "If you will ... then you, Yahweh, will be the God that I will worship" (See: [[rc://en/ta/man/translate/figs-123person]])
This stands for Jacob's journey to find a wife and to return home. Alternate translation: "on this journey" (See: [[rc://en/ta/man/translate/figs-metonymy]])