Commentaries:
These displaced persons are heading generally south, but they are milling around in confusion—they are terrified, frightened and do not know what to do. This is what they are doing at the fords of Arnon, saying, "What should we do? Where should we go? Maybe we ought to go to Zoar? It's a little place, you see. Nobody will pay any attention to us if we're there." But God admonishes them to make an offering—thus the mention of the word "lamb"—to the ruler of the land.
Who is the ruler of the land? It has to be Christ, because that is where His church is. He is governing His church, and He is admonishing the Moabites to make an offering. He is saying, "Pray, cry out for mercy to the ruler of the land, to Jesus Christ." The offering is to go through Selah: "From Selah to the wilderness," because that is where God's outcasts are. But He tells them, "Be sure nobody sees you. Hide them, hide My people. Don't betray where My people are," Then he encourages them, "Hang on! It's almost over. Christ is coming, and it's but a short time to when that will take place."
John W. Ritenbaugh
A Place of Safety? (Part 2)