"I’m as good as any Christian!"

A Christian, by himself, isn’t good. Jesus said that only God is good. The only "goodness," or righteousness, that the believer has comes from Christ (2 Corinthians 5:21; Philippians 3:9). The Bible tells us that, without Christ, man is corrupt and filthy; "there is none that does good, no, not one" (Psalm 14:3). See also Romans 3:9 footnote.