31 As for God, his way is perfect. The word of Yahweh is tested. He is a shield to all those who take refuge in him.
*Minor differences ignored. Grouped by changes, with first version listed as example.
[As for] God, his way [is] (o) perfect; the word of the LORD [is] tried: he [is] a buckler to all them that trust in him.
(o) The manner that God uses to aid his own, never fails.
As for God, his way is perfect; the word of the Lord is tried: he is a buckler to all them that trust in him. See Gill on Psalm 18:30.
He derives this confidence from the acts of God, and also from His word. האל (God) is written absolutely, like הצּוּר in Deuteronomy 32:4. The article points back to בּאלהי. Jehovah is the God (האל), whose way is perfect, without blemish; and His word is refined brass, pure silver (cf. Psalm 12:7). He who trusts in Him is safe from all foes. The last two clauses occur again in Agur's proverbs (Proverbs 30:5). The thought of the last clause is still further explained in 2-Samuel 22:32.
*More commentary available at chapter level.