King James Version
And Moses took the bones of Joseph with him: for he had straitly sworn the children of Israel, saying, God will surely visit you; and ye shall carry up my bones away hence with you.New International Version
Moses took the bones of Joseph with him because Joseph had made the sons of Israel swear an oath. He had said, "God will surely come to your aid, and then you must carry my bones up with you from this place."Catholic Public Domain Version
Also, Moses took the bones of Joseph with him, because he had sworn to the sons of Israel, saying: "God will visit you. Carry my bones away from here with you.