Then Zipporah took a sharp stone, and cut off the foreskin of her son, and cast it at his feet, and said, Surely a bloody husband are you to me.
All Commentaries on Exodus 4:25 Go To Exodus 4
Augustine of Hippo
AD 430
And this was made manifest by the message of an angel in the case of Moses’ son, for when he was carried by his mother, being yet uncircumcised, it was required, by manifest present peril, that he should be circumcised. And when this was done, the danger of death was removed. As therefore in Abraham the justification of faith came first and circumcision was added afterwards as the seal of faith, so in Cornelius the spiritual sanctification came first in the gift of the Holy Spirit. And the sacrament of regeneration was added afterward in the laver of baptism. .