From God's Word
Do your best to present yourself to God as one approved, one who needn't be ashamed, one who correctly handles the word of truth.
Kings take pleasure in honest lips; they value those who speak the truth.
The Lord is true to everything he promises; he is faithful in all that he does.
Jesus answered, "I am the way, the truth, and the life."
Jesus said, "If you accept my teaching, you are really my disciples. Then you will know the truth, and the truth will set you free."
John 8:31, 32
The Spirit of God is truth, he will guide you into all truth.
Buy the truth and do not sell it -- get wisdom, instruction and insight as well.