INTRODUCTION TO PSALM 121 A Song of degrees. The inscription of the Syriac version is, "one of the songs of ascent out of Babylon.'' Aben Ezra thinks it was composed on account of Israel, when in a siege and distress; or, adds he, on account of the children of our captivity; the present state of the Jews. Grotius is of opinion it was written by David, at the time of the battle with Absalom. Some take it to be a military psalm, proper for soldiers engaged with an enemy: others, that it is suitable for travellers when on a journey; and why not for persons also, when they commit themselves to God in the night watches, and about to take rest? And indeed it is suitable at all times; when the good man may, with the psalmist, expect divine help, and be secure of protection and preservation.