Great Sermon!
I applaud you for realizing the PHYSICAL circumcision under the old covenant was in fact a BLOOD SACRIFICE FOR SIN. At least, it seems you were acknowledging that fact, proven by a passage in Exodus 4:24-26. In the new testament precisely because of Christ's blood being shed for the sins of the world, PHYSICAL circumcision was ABOLISHED. In fact, the Apostle Paul called it MUTILATION (Philippians 3:2), but unfortunately few Christians are teaching this today.
Again, I applaud you for recognizing that today we are under the new covenant of SPIRITUAL circumcision of the HEART. It is also important that we teach parents to keep their children whole and intact as creator God made them and no longer practice PHYSICAL circumcision.
God bless! CircumcisionInBible.WordPress.com