Built an altar. — Altars, like the altar Ed (Joshua 22:34), built by the Transjordanic tribes, were not always intended for purposes of sacrifices, but to witness some great event or Divine appearance (Genesis 31:48; Genesis 26:25; Exodus 17:15).
Jehovah-shalom. — “The Lord is peace.” We find similar names in Jehovah-jireh, “the Lord will provide” (Genesis 22:14); Jehovah-nissi, “the Lord my banner” (Exodus 17:15); and Jehovah-tsidkenn, “the Lord our righteousness” (Jeremiah 23:6). (Comp. Ezekiel 48:35.) See Pearson on the Creed, Art. 2.