Praise ye the LORD: for it is good to sing praises unto our God; for it is pleasant; and praise is comely. The four psalms (and probably the preceding psalm, Psalms 146:1-10), 147-150, form one whole. All (Psalms 147:1-20; Psalms 148:1-14; Psalms 149:1-9; Psalms 150:1-6) are severally marked by 'Hallelujah' at the beginning and end. All alike are joyous thanksgivings, without any of the lamentations which appear in the other psalms of the period after the return from Babylon. All combine the praises of God in nature with the praise of His grace to His people. All refer to a great salvation performed for Israel. This cycle of psalms was probably designed for the dedication of the walls of Jerusalem under Nehemiah. The "gates" are mentioned, Psalms 148:13. Compare Nehemiah 12:27-43. The post-exile psalms heretofore, while Jerusalem lay unprotected, are tinged with sadness; but now joy predominates (cf. Nehemiah 6:15-16; Nehemiah 12:43; Psalms 149:6-9). The Levites' prayer (Nehemiah 9:6) accords with Psalms 146:6. Compare Psalms 147:19; Nehemiah 9:13-14; Nehemiah 10:29. The same instruments were used in dedicating the walls as appear in this psalm-cycle (cf. Psalms 147:7; Psalms 150:3-5 with Nehemiah 12:27; Nehemiah 12:35; Nehemiah 12:41).
Praise ye the Lord - Hallelujah.
For it is good to sing praises unto our God - from Psalms 92:1.
For it is pleasant - from Psalms 135:3.
(And) praise is comely - from Psalms 33:1.