‘Who changed the truth [something said, something given] of God into a lie.’ This is now the second step, and we can see that if we read verse 26 – ‘For this cause …’.
We exchanged the truth about the Creator for a lie. It was so obvious to each one of us by looking at the night sky and at life all around us, by looking at the hills, and by looking at ourselves; it was obvious that there was a Creator, but we wilfully exchanged that truth, that reality, for a lie. We embraced idolatry, or the modern equivalent of it, the theory of evolution, because it did away with God and left us free to live as we wanted. We ‘worshipped and served the creature’, served earthly things, not just idols, but all earthly things, and made them our gods.