Psalms 72:20

“The prayers of David the son of Jesse are ended.] The Septuagint version renders it, the hymns. This psalm is thought by some to be the last that was written by David, though put in this place; and it is certain that the psalms are not always placed in the order of time in which they were written: this being, as is supposed, made by him in his old age, when Solomon his son was appointed and set upon his throne by his order; on account of which he composed it, with a view to the Messiah, the antitype of Solomon. Or, as others, this is the last of the psalms, which were put together and digested in order by David himself; the rest that follow being collected by Hezekiah or the Levites. Aben…”

“The prayers of David the son of Jesse are ended - This is not found in the Syriac. The following is added in that version at the close of the psalm: “The end of the Second Book.” In regard to this twentieth verse, it is quite clear that it is no part of the psalm; and it is every way probable that it was not placed here by the author of the psalm, and also that it has no special and exclusive reference to this psalm, for the psalm could in no special sense be called “a prayer of David.” The words bear all the marks of having been placed at the close of a collection of psalms, or a division of the Book of Psalms, to which might be given as an appropriate designation, the title “The Prayers of…”

“The prayer - This psalm is the last which David composed: for this was wrote but a little before his death. Next: Psalms Chapter 73”

“72:20 This parenthetical note ends Book Two, which consists mostly of prayers of David. Books Three to Five were probably compiled after Book Two; they include additional psalms of David (Pss 86, 101, 103, 108–110, 122, 124, 131, 133, 138–145).”

“The prayers: This was probably the last Psalm he ever wrote; and with it ends the second book of the Psalter. Sa2 23:1; Job 31:40; Jer 51:64; Luk 24:51 Next: Psalms Chapter 73”

“Superscription of the primary collection. The origin of this superscription cannot be the same as that of the doxology, which is only inserted between it and the Psalm, because it was intended to be read with the Psalm at the reading in the course of the service (Symbolae, p. 19). כּלוּ = כּלּוּ, like דּחוּ in Ps 36:13, כּסּוּ, Psa 80:11, all being Pual forms, as is manifest in the accented ultima. A parallel with this verse is the superscription "are ended the words of Job" in Job 31:40, which separates the controversial speeches and Job's monologue from the speeches of God. No one taking a survey of the whole Psalter, with the many Psalms of David that follow beyond Ps 72, could possibly…”