NET
30 The one true God acts in a faithful manner; the Lord’s promise is reliable. He is a shield to all who take shelter in him.
Darby
30 As for God, his way is perfect; the word of Jehovah is tried: he is a shield to all that trust in him.
KJV
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.