When I am asked to lead the congregation in a prayer of confession, I take some of the content from the Scripture reading that takes place just before the prayer. I also include things from the sermon text and themes. And finally, I just observe things in my own life that I fail at that might apply individually or corporately. I also anticipate the assurance of pardon as well. This prayer of confession includes themes from Psalm 80 and the sermon theme of church membership.

Here is the prayer if you are interested.