A Song to Sing on the Day of Salvation: After an act of deliverance of the kind that brought the people out of Egypt, one might expect there to be a song to sing like that in Exodus 15, and so there is; indeed, verse 2 virtually repeats Exodus 15:2.

12:1–2 Israel is challenged to announce its intention to praise: the verb is the one that introduces thanksgiving, that praise that gives testimony to what Yahweh has just done for the worshiper, by making public confession of the facts—as also happens when one confesses sin. For many chapters, that day has been a day of calamity (2:11, 17, 20; 3:7, 18; 4:1; 5:30; 7:18, 20, 21, 23; only 4:2 is an exception). Now it is the day when the remnant turns to Yahweh (10:20), when Assyria’s burden is taken from Judah’s shoulders (10:27), when the Davidic…