What Does Exodus 15:15 Mean?

"Now are the chiefs of Edom dismayed; trembling seizes the leaders of Moab; all the inhabitants of Canaan have melted away." The international fear-catalog continues: Edom (the nation descended from Esau, south and east of the Jordan), Moab (east of the Dead Sea, descendants of Lot), and Canaan (the entire land west of the Jordan that Israel is heading toward). The progressive geography of the fear catalog moves from coastal Philistia (verse 14) to the Transjordan kingdoms (Edom, Moab) to the entire Canaanite population (verse 15). The fear encircles the promised land from all sides.

The "melted away" language (Hebrew: namogu, dissolved/melted/wavered) is the Exodus's most frequently borrowed term for the fear effect on Canaanite nations: Joshua 2:11 uses it (Rahab: "our hearts melted"), Joshua 5:1 uses it ("their hearts melted"), and Joshua 7:5 uses it after Ai's defeat ("the hearts of the people melted"). The "melt" result predicted in the Song of the Sea becomes the consistent narrative description of the Canaanite response to Israel's advance: the song was prophetically accurate in its prediction of the land's response.

The Edom and Moab listing in the international-fear catalog is striking because both nations will refuse Israel immediate passage through their territory (Numbers 20:14-21; 21:11-13) despite this fear. The fear that "melts away" the will to resist in Canaanite cities does not produce the same compliance in Edom and Moab. The song's international trembling is not universally converted into cooperation; some nations fear but still resist. Fear of YHWH's power does not automatically produce covenant submission: only Rahab among the Canaanites crosses from fear to faith-in-action (Joshua 2:11-12).