In Matthew 9:13, Jesus says to his disciples, “Go and learn what this means; I desire mercy, not sacrifice. For I have not come to call the righteous, but sinners.”
The Jews of the Old Testament had many rules about what was required in case they sinned. There were specific sacrifices required for different types of sins. The result of this was that people could feel like they were “all right” if they made the required sacrifice, and thereby deserving of God’s favor.
I think what Jesus was trying to convey was that you cannot make yourself “all right.” It is the person who knows that he or she is a sinner, and cannot free him or herself for whom Jesus is looking. When we understand that we are lost without a Savior, we are ready for his mercy, and only by God’s mercy can we be made “all-right,” or “righteous.”
Dear Lord, we are so thankful for the one key difference between Christianity and other religions, which is, You save us; We cannot save ourselves. Help us come to you humbly with this awareness, but also with the confidence of our Salvation by your grace and mercy. In Jesus’ name we pray. Amen.