John Gills Exposition of the Bible Commentary - Psalms 115:9
O Israel, trust thou in the Lord ,.... Or, "the house of Israel hath trusted in the Lord": so the Septuagint, Vulgate Latin, Syriac, Arabic, and Ethiopic versions: the Targum is, "Israel trusteth in the Word of the Lord;' in distinction from the Heathens, that trust in their idols. But it is better rendered as an imperative, trust thou; it being an exhortation to Israel to trust in the Lord, in opposition to idols; and may be understood of Israel, literally taken, who were God's chosen... read more
Matthew Henry's Complete Commentary - Psalms 115:9-18
In these verses, I. We are earnestly exhorted, all of us, to repose our confidence in God, and not suffer our confidence in him to be shaken by the heathens? insulting over us upon the account of our present distresses. It is folly to trust in dead images, but it is wisdom to trust in the living God, for he is a help and a shield to those that do trust in them, a help to furnish them with and forward them in that which is good, and a shield to fortify them against and protect them from every... read more