1 Nephi 17:26

Now ye know that Moses was commanded of the Lord to do that great work; and ye know that by his word, the waters of the Red Sea were divided hither and thither, and they passed through on dry ground.

You know the Lord commanded Moses to do that great work. You know that by his word, the Red Sea split apart. They walked through on dry ground.

“You know God commanded Moses to do that great work. You know Moses spoke and the Red Sea split apart, and they walked through on dry ground.”