Isaiah fully acknowledges how bad it is in these two words, "but now," and at the same time declares his faith in the gracious promise of the Lords. Isaiah is clinging to the underserved grace of God just as we can cling to that same underserved grace. The two words, "but now" expresses faith because they say in spite of our sins and in spite of the fact that even our best amounts to nothing but dirty bloody unclean rags. In spite of the disgusting stain of sin, the prayer expresses faith in the Lord because it calls on the promises of God.
In the prayer Isaiah uses two different names for God, Lord and Father. First he uses Lord to call to the God of the covenant who revealed His name to Moses. This is the compassionate and gracious God, slow to anger, abounding in love and faithfulness, maintaining love to thousands, and forgiving wickedness, rebellion and sin. Yet He does not leave the guilty unpunished; he punishes the children and their children for the sin of the fathers to the third and fourth generation. Secondly he uses Father; he is saying He is "our father." In this cry of faith he claims God as the dearest treasure.
This prayer recognizes God to be the creator, the potter who made them, the potter that shaped them into a nation after He called Abraham. The potter that not only made a new creation out of the descendants of Abraham but made a new creation out of each of us. He shaped us as individuals, each in their own special way. We are shaped differently for different uses.
The potter took what we are, sinful unclean bloody rags and threw us on the potter’s wheel and through His son Jesus He makes us into a new creation. Our sin separates us from God but faith in Jesus and His dying act of forgiveness, faith in Jesus’ resurrection that puts an end to eternal death, faith in Jesus turns to God and depends on His gracious promise. We come to God in the name of Jesus, Jesus who shed His blood to wash away our sins. God invites us to pray to Him as dear children ask their dear Father. WE can pray with confidence and boldness because, in Jesus, God is our dear Father and we are His new creation. This prayer boldly erupts from the heart of a believer who trusts in the gracious promises of the Lord. You too can pray trusting in the gracious promises of the Lord. They are promises made to you from a Father that loves you more than anything else. During this, the first Sunday of Advent as we anxiously await the coming of our Lord in the person of Jesus as a baby in Bethlehem remember why it was necessary for God to send His Son. We are filthy bloody disgusting rags but our Father wants to create a new creation in us through Jesus Christ. So let’s await His coming with excitement and joy knowing He does it because He loves us.
Amen