 When you as a born-again believer place your faith in the finished work of the cross, there's a great exchange that takes place. When God looks at the cross and he sees the suffering of his Son, and he had poured out his wrath upon the Son, when God looks at that sacrifice, he sees your every mistake. It was our sins that put him there. When God looks at the cross, he sees your flaws. He sees your mistakes. He sees your sinful attitudes, your sinful thoughts. And that exchange took place in your favor, because now when God looks at those who place their faith in Christ Jesus, he sees Christ's perfection on them.