Mosiah 7:1 - 7:5
Mosiah 7:1 And now, it came to pass that after king Mosiah had had continual peace for the space of three years, he was desirous to know concerning the people who went up to dwell in the land of Lehi-Nephi, or in the city of Lehi-Nephi; for his people had heard nothing from them from the time they left the land of Zarahemla; therefore, they wearied him with their teasings.
King Mosiah had peace in the land for three years. During that time many of the people were very desirous to know about a group of people that had return to the Land of Nephi from which King Mosiah’s grandfather Mosiah 1st had escaped from alone with all the Nephites coming to the Land of Zarahemla. The people were continually after King Mosiah to send men down there to see of their fate. [Probably lots of relatives of the people were among those that went down to the Land of Nephi]
Mosiah 7:2 And it came to pass that king Mosiah granted that sixteen of their strong men might go up to the land of Lehi-Nephi, to inquire concerning their brethren.
Anyway King Mosiah allowed 16 of their best men to make the journey to see if they could locate these immigrants and ascertain their condition.
Mosiah 7:3 And it came to pass that on the morrow they started to go up, having with them one Ammon, he being a strong and mighty man, and a descendant of Zarahemla; and he was also their leader.
The leader of the expedition was a man named Ammon. He was a descendent of Zarahemla (not a descendent of Lehi) and they started out on their search the day following the decision to go.
Mosiah 7:4 And now, they knew not the course they should travel in the wilderness to go up to the land of Lehi-Nephi; therefore they wandered many days in the wilderness, even forty days did they wander.
No one had kept a map as to the way to get back to the land of Nephi, so the group traveled for 40 days until they came upon their destination.
Mosiah 7:5 And when they had wandered forty days they came to a hill, which is north of the land of Shilom, and there they pitched their tents.
They came to a hill overlooking the land called Shilom and made camp before going into the land. [I’m sure they wanted to place to retreat to if they found themselves in trouble because of their ignorance of what they would find in the land of Nephi.]