Blessed, &c. Hebrew. barak, not 'ashrei, as in Psalms 41:1 and the Beatitudes (App-63). This Doxology concludes the first book of Psalms, also the second book (Psalms 72:18-20). They were the words of David when he brought up the Ark (1 Chronicles 16:36), also in 1Ki 1:47, 1 Kings 1:48, when this group (37-41) was written; also in 1 Chronicles 29:10. They are taken up again in Luke 1:68-70.
to everlasting: i.e. to the age to come.
Amen. Truth. Figure of speech Epizeuxis (App-6), for solemn emphasis.
To the chief Musician. See App-64.