John Gills Exposition of the Bible Commentary - Psalms 149:6
Let the high praises of God be in their mouth ,.... Or "throats" F13 בגרונם "in gutture eorum", V. L. Pagninus, Montanus, Piscator, &c.; ; loudly declared by them. The word "praises" is not in the text, and so may be read, "the high things of God" F14 רוממות אל αι υψωσεις του θεου , Sept. "celsitudines", Schmidt. ; or, "the heights of God", as the Septuagint: and these are the perfections of God; as his omniscience, which is knowledge too high for a creature to... read more
Matthew Henry's Complete Commentary - Psalms 149:6-9
The Israel of God are here represented triumphing over their enemies, which is both the matter of their praise (let them give to God the glory of those triumphs) and the recompence of their praise; those that are truly thankful to God for their tranquillity shall be blessed with victory. Or it may be taken as a further expression of their praise (Ps. 149:6): let the high praises of God be in their mouth, and then, in a holy zeal for his honour, let them take a two-edged sword in their hand, to... read more