Psalm 33:4

For the word of the LORD is right and true; he is faithful in all he does.

For the word of the LORD is right 
Psalm 19:8  The precepts of the LORD are right, giving joy to the heart. The commands of the LORD are radiant, giving light to the eyes.

and true 
Psalm 119:142  Your righteousness is everlasting and your law is true.
Revelation 19:9  Then the angel said to me, "Write this: Blessed are those who are invited to the wedding supper of the Lamb!" And he added, "These are the true words of God."
Revelation 22:6  The angel said to me, "These words are trustworthy and true. The Lord, the God who inspires the prophets, sent his angel to show his servants the things that must soon take place."

he is faithful in all he does 
Psalm 18:25-26  To the faithful you show yourself faithful, to the blameless you show yourself blameless, to the pure you show yourself pure, but to the devious you show yourself shrewd.
Psalm 25:10  All the ways of the LORD are loving and faithful toward those who keep the demands of his covenant.

Scriptures taken from the Holy Bible, New International Version® NIV®, Copyright© 1973, 1978, 1984, 2011 by Biblica, Inc.® Used by permission. All rights reserved worldwide. 
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