Psalms 18:30

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.
— Psalms 18:30, King James Version

In other translations

World English Bible (WEB)

As for God, his way is perfect. The word of Yahweh is tried. He is a shield to all those who take refuge in him.

American Standard Version (ASV)

As for God, his way is perfect: The word of Jehovah is tried; He is a shield unto all them that take refuge in him.

Young's Literal Translation (YLT)

God! perfect <FI>is<Fi> His way, The saying of Jehovah is tried, A shield <FI>is<Fi> He to all those trusting in Him.