This beautiful and animated psalm closes the series of the Hallelujah Psalm Ps. 146-150, and appropriately also closes the entire volume. Its author is unknown, but in respect to the object for which it was composed there can be no uncertainty. It was manifestly designed, whoever wrote it, to occupy the very place which it does occupy - to complete the volume devoted to praise. Praise is the suitable ending of the book; praise is what the Spirit of inspiration meant to secure in the heart and on the lips. In the review of the whole there is occasion for praise. In view of all that has been disclosed about God, about his religion, about the manifestations of his mercy and grace to his people, there is occasion for praise. After all that has been experienced, observed, and recorded in this book - all of trial, sorrow, temptation, conflict, disappointment, sickness, bereavement, persecution, war, captivity, bondage, exile, tears, pain, darkness, trouble - there is, as the result of the whole, as there will be at the end of our own troubled and chequered lives, occasion for exultation, praise, triumph - songs, rejoicings, raptures, hallelujahs. This psalm, then, made up wholly of expressions of gratitude and praise, is an appropriate close to the entire Book of Psalm. So may our lives close, when its varied scenes are over, with thanksgivings and praises, as a proper expression in view of the past, and as emblematic of the uninterrupted employment that awaits us in the heavens.

A general exhortation to praise God, Psalm 150:1, Psalm 150:2. With the trumpet, psaltery, and harp, Psalm 150:3. With the timbrel and dance, stringed instruments and organs, Psalm 150:4. With the cymbals, Psalm 150:5. All living creatures are called upon to join in the exercise, Psalm 150:6.
This Psalm is without title and author in the Hebrew, and in all the ancient versions. It is properly the full chorus of all voices and instruments in the temple, at the conclusion of the grand Hallelujah, to which the five concluding Psalm belong.

INTRODUCTION TO PSALM 150
This psalm is of the same kind and upon the same subject with the two preceding ones; and very probably was written by the same hand, and about the same time; and is a very proper psalm to conclude this book with, being all praise. Some say (q) this psalm was sung by the Israelites, when they came with their firstfruits into the sanctuary, with the basket on their shoulders. "Thirteen" times in this short psalm is the word "praise" used; not on account of thirteen properties or perfections in God, as Kimchi thinks: but it is so frequently and in every clause used, to show the vehement desire of the psalmist that the Lord might be praised; and to express his sense of things, how worthy he is of praise; and that all ways and means to praise him should be made use of, all being little enough to set forth his honour and glory. And not the Levites only, whose business it was in the temple service to praise the Lord with musical instruments, are here exhorted to it, as R. Judah the Levite thinks, but all people; not the people of Israel only, as Kimchi; but the Gentiles also, even all that have breath, Psalm 150:6. For, as R. Obadiah Gaon observes, this psalm belongs to the times of the Messiah; to the Gospel dispensation, to the latter part of it, especially when Jews and Gentiles shall be converted; and when all will praise the Lord, as they will have reason for it.
(q) Weemse's Christ. Synagog. l. 1. c. 6. s. 4. p. 145.

A psalm of praise.

The Final Hallelujah
The call to praise Jahve "with dance and with timbrel" in Psalm 149:3 is put forth here anew in Psalm 150:4, but with the introduction of all the instruments; and is addressed not merely to Israel, but to every individual soul.