The sinful depravity of humanity makes God’s judgment necessary. Paul’s point is you can’t turn your sinful depravity around, without turning to Jesus. You can keep trying to be your own god, keep trying to save and transform your heart, but you can’t turn your sin natured heart around, without turning to Jesus for the salvation and transformation of your heart. Jesus is our God who came to save us from the darkness of the sinful depravity we’re in. He loves us so much he couldn’t just sit back and watch our sins take us into eternal hell, but he also couldn’t just ignore our sins. So he came to bring his love and righteous judgement together on the cross, by dying the death we deserved to die for our sins. 1st John 1:9 says, “If we confess our sins, he is faithful and righteous to forgive us, and to cleanse us from all unrighteousness.”