Romans 1 21
They knew God, but they did not give glory to God or thank him. Their thinking became useless. Their foolish minds were filled with darkness.
Compare with other 3 random translations
NIV Romans 1:21For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened.
EAS Romans 1:21Those people really knew about God. But they did not respect him as a great God, and they did not thank him. They did not even think clearly any more. Their minds became confused and they did not understand God's message.
AMP Romans 1:21Because when they knew and recognized Him as God, they did not honor and glorify Him as God or give Him thanks. But instead they became futile and godless in their thinking [with vain imaginings, foolish reasoning, and stupid speculations] and their senseless minds were darkened.