Exchanged the Truth. Romans 1:25 The truth of God involves more than His Word revealed to us in the holy scriptures. It includes the truth about God Himself - His glories, nature, character, infinite power, and wisdom. There is no form or image that can begin to convey all that God is. If we were ever so skilled with words, we could never describe Him. If all the finest artisans could spend their lifetimes trying to depict Him using all their expertise, they could not begin to show us the truth of God Himself. A photographer could travel the world, find every scene in his lens and take every awe-inspiring picture he could, and those images of the Creator's work would never define the truth of God.
Contrast the indescribable, eternal God with "the lie" that people have exchanged the truth of God for, and we begin to see how heinous, offensive, horrible, and damnable the actions of men are. They have replaced truth with an illusion; what is holy and perfect with falsehood and delusion; what is real and constant with prevarication and fiction. And then, on top of that evil, they worship and serve this figment of their imagination instead of the One who made the creature. Idolatry is so great a wickedness that it must be done away with. There is "no agreement" of the "temple of God with idols." God condemns idolatry in every form. Anything that claims and keeps my attention on it and away from God is an idol.
When they think upon the "Great Creator who became my Savior," every true child of God is moved to express worship in spirit and in truth - usually in humble and sincere words. We realize and express the fact that "all God's fullness dwelleth in Him." The children of light passing through a world of darkness are always ready to express their faith in simple, heart-felt words that clarify his or her devotion to God. Even though they may be living among the devotees of sin - the child of God's faith is reaffirmed with a "Yea" and "Amen."