I will praise thee, O LORD, among the {b} people: and I will sing praises unto thee among the nations.

(b) He prophecies of the calling of the Gentiles: for unless they were called, they could not hear the goodness of God.Psalm 108:3 Parallel Commentaries

The Mercy of God
The next attribute is God's goodness or mercy. Mercy is the result and effect of God's goodness. Psa 33:5. So then this is the next attribute, God's goodness or mercy. The most learned of the heathens thought they gave their god Jupiter two golden characters when they styled him good and great. Both these meet in God, goodness and greatness, majesty and mercy. God is essentially good in himself and relatively good to us. They are both put together in Psa 119:98. Thou art good, and doest good.' This …
Thomas Watson—A Body of Divinity

Psalms
The piety of the Old Testament Church is reflected with more clearness and variety in the Psalter than in any other book of the Old Testament. It constitutes the response of the Church to the divine demands of prophecy, and, in a less degree, of law; or, rather, it expresses those emotions and aspirations of the universal heart which lie deeper than any formal demand. It is the speech of the soul face to face with God. Its words are as simple and unaffected as human words can be, for it is the genius …
John Edgar McFadyen—Introduction to the Old Testament