“Praise the Lord! Praise God in his sanctuary; praise him in his mighty firmament!” Psalm 150:1

“Alleluia” in the Hebrews means “Let us bless God.” The verb “to bless” in this Psalm is used in the sense of “to praise” and in an imperative manner. This means it is not an offer or an invitation, but a command addressed to each of us. This is best seen in the last verse of Psalm 150 when the psalmist calls out: “All souls, bless the Lord.” All with souls are called to bless and glorify God “with joy… with sweet words… with audible speech… with the voice of thanksgiving” (Psalm 150:4-6).