Verse 21. - I will praise thee; for thou hast heard me. The chant of the procession as it enters - a prolongation of the strain begun in ver. 19. And art become my salvation (comp. ver. 14).

118:19-29 Those who saw Christ's day at so great a distance, saw cause to praise God for the prospect. The prophecy, ver.I will praise thee, for thou hast heard me,.... Here the psalmist reassumes his part in this song, and determines to praise the Lord for hearing him when in distress, and when he was encompassed with his enemies, and for delivering him out of their hands;

and art become my salvation; the author of it, and therefore deserving of praise; and who is no other than the Messiah Jesus, who is described in the next verse.