Psalm 18:30 in the World English Bible
As for God, his way is perfect. The LORD’s word is tried. He is a shield to all those who take refuge in him.
Context
29 For by thee I have run through a troop; and by my God have I leaped over a wall.
30 As for God, his way is perfect: the word of the LORD is tried: he is a buckler to all those that trust in him.
31 For who is God save the LORD? or who is a rock save our God?