Jesus shows you the goodness of God by sending him to succeed where you failed. You are in his triumphant procession. No longer do you have to work for God’s approval. If you are in Christ, God approves of you.
Adam in the garden failed, Israel in the wilderness failed, but where they couldn’t live up to God’s law, Jesus did. He is the better Adam, and he is the true Israel, who delighted to do God’s will. And that perfect record God has put into your account, so you are now as perfect as Jesus.