Psalm 18:30 in the King James Version
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.
Context
29 For by you, I advance through a troop. By my God, I leap over a wall.
30 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.
31 For who is God, except the LORD? Who is a rock, besides our God,