Rely on God's Mercy in the Redeemer
You should come to God by faith, as a little chicken hastens under the hen's wings, and say: I would not be so bold as to speak this prayer were it not done in the name of Christ. In His name I bow my knees, although I am not worthy to be heard by God. Thus we pray that our prayer may be offered in faith and may flow from faith.
(What Luther Says - para 3437, pp. 1078)