When Lehi had given Nephi his assignment from the Lord, Nephi immediately said that he would go and do it, and as soon as they had found out that it wasn’t going to be as easy as they thought, Nephi said again with a powerful oath, "As the Lord liveth and as we live, we will not go down to our father in the wilderness until we have accomplished the thing which the Lord hath commanded us" (3:15–16). As he said before, he remained convinced that the Lord would provide a way, and so he said to his brothers, "Let us be faithful in keeping the commandments of the Lord."
And interestingly, whom does Nephi think of as the grand example of obedience and the Lord’s deliveries? Moses. I love how connected Nephi feels to Moses. "Let us be strong like unto Moses, for he truly spake unto the waters of the Red Sea and they divided hither and thither and our fathers came through out of captivity onto dry ground and the armies of pharaoh did follow and were drowned in the waters of the Red Sea" (4:2). And I love what he said to Laman and Lemuel. "Now behold, ye know that that is true" (4:3). You know that happened. "You also know that an angel has spoken to you. Wherefore can ye doubt? Let us go up. The Lord is able to deliver us, even as our fathers, and to destroy Laban" (4:3). Little does he know that shortly that’s going to be fulfilled in a way that he did not anticipate.