With the marriages accomplished, the time for dwelling in the valley of Lemuel has passed, and the Lord commands them to be on their way. Lehi does not know beforehand that they will leave on the next day, for the Lord speaks to him in the night, after the marriages. Perhaps the Lord's willingness to allow them to tarry in the valley of Lemuel, and the command to depart right after the marriages are related. Perhaps it was the unstated purpose of the time in Lemuel to provide the opportunity for the families to prepare to be joined in marriage, and for that event to occur. Certainly other mighty spiritual events occur here, but the purposes of the Lord are apparently not completed for that time until the marriages are effected.