|Matthew Henry's Concise Commentary|
145:10-21 All God's works show forth his praises. He satisfies the desire of every living thing, except the unreasonable children of men, who are satisfied with nothing. He does good to all the children of men; his own people in a special manner. Many children of God, who have been ready to fall into sin, to fall into despair, have tasted his goodness in preventing their falls, or recovering them speedily by his graces and comforts. And with respect to all that are heavy laden under the burden of sin, if they come to Christ by faith, he will ease them, he will raise them. He is very ready to hear and answer the prayers of his people. He is present every where; but in a special way he is nigh to them, as he is not to others. He is in their hearts, and dwells there by faith, and they dwell in him. He is nigh to those that call upon him, to help them in all times of need. He will be nigh to them, that they may have what they ask, and find what they seek, if they call upon him in truth and sincerity. And having taught men to love his name and holy ways, he will save them from the destruction of the wicked. May we then love his name, and walk in his ways, while we desire that all flesh should bless his holy name for ever and ever.
Verse 21. - My mouth shall speak the praise of the Lord. The "psalm of praise" (title) ends as it began (vers. 1, 2) - with the strong determination of the psalmist that he at least will praise Jehovah. Others, he hopes, will join with him, and all flesh bless his holy Name (literally, the Name of his holiness) forever and ever; but for this result he can only wish and hope and pray - he cannot ensure it. But he can, and does, fulfill his own duty in the matter.
Gill's Exposition of the Entire Bible
My mouth shall speak the praise of the Lord,.... Always, at all times, as long as he lived; and particularly when all the Lord's people shall be brought safe to glory, and the wicked destroyed; when, as Kimchi observes, he should live again with the dead that shall be raised;
and let all flesh bless his holy name for ever and ever; not every animal, or irrational creature; not carnal men, but spiritual men; such as are praying ones, that come to a God hearing prayer: these should be praising ones; such who have hearts of flesh given them, and are sensible of divine favours, as well as of their sinfulness and unworthiness; Jews and Gentiles, all sorts of men called by grace, all flesh on whom the Spirit of God is poured; these are all excited to praise and bless the holy name of the Redeemer, with the words and by the example of the psalmist. And thus the psalm ends as it begun, with praise and blessing.
Jamieson-Fausset-Brown Bible Commentary
21. (Compare Ps 33:21).
all flesh—(Ps 65:2). The Psalm ends, as it began, with ascriptions of praise, in which the pious will ever delight to join.
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