Romans 1:18

Why is God angry at sinful people? because they have substituted the truth about him with a fantasy of their own imagination (1:25). They have stifled the truth God naturally reveals to all people in order to believe anything that supports their own self-centered life-styles. God cannot tolerate sin because his nature is morally perfect. He cannot ignore or condone such willful rebellion. He wants to remove the sin and restore the sinner-and he is able to, as long as the sinner does not stubbornly distort or reject the truth. But God shows his anger against those who persist in sinning.
Romans 1:18-3:20 develops Paul's argument that no one can claim by their own work or merit to be good in God's sight-not the masses, not the Romans, not even the Jews. All people everywhere deserve God's condemnation for their sin.