God is Perfect

Be ye therefore perfect, even as your Father which is in heaven is perfect. (Matthew 5:48)

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. (Psalm 18:30)

I know that, whatsoever God doeth, it shall be for ever: nothing can be put to it, nor any thing taken from it: and God doeth it, that men should fear before him. (Ecclesiastes 3:14)