Would you ever use the word “beautiful” to describe a church, a ministry or a sermon? Isaiah makes clear that when a ministry is full of the gospel of Jesus Christ it really is something very beautiful.
God's grace is better than anything else in the world. It is a pure gift from God to sinners. It is to be insisted upon and let loose in Christ's church, without hesitation, and to be enjoyed no matter what messiness such a good gift causes.
Jesus in his healing of the leper exposes Jewish distortions of the law as he also fulfills the law. But more importantly, he reveals who he is and his mission to save as does what the law was powerless to do.