ISB ~ Romans 1 v32

they know God’s decree:Even the pagans possess a moral awareness of right and wrong. Because of this, they can no more defer responsibility for their wickedness than plead ignorance of God’s existence (1:21) (CCC 1776, 1954).

approve those who practice them:The Gentiles are guilty of adulation, i.e., the sin of applauding others for their wrongdoing. Praising sinners is itself sinful because it emboldens them to continue in their evil ways.