"To the law and to the testimony: if they speak not according to this word, it is because there is no light in them." Isaiah 8:20
Answer: The Bible declares three (3) things as Truth!
"Jesus said to him, “I am the way, the truth, and the life." (John 14:6)
"Sanctify them by Your truth. Your word is truth." (John 17:17 )
"You are near, O LORD, and ALL Your commandments are truth." (Psalm 119:151)
Buy the TRUTH, and sell it not; also wisdom, and instruction, and understanding. Proverbs 23:23