Then, Noah and all his covenanted household were baptized by rainwater from above. However, the wicked outside the ark were non-baptismally drowned to death by total submersion from beneath. Genesis 6:18 & 7:1-23 cf. First Peter 3:20f.
Too, the Bible insists that adult believers like Abraham, after they had professed faith in Jehovah — were to be circumcised, covenantally, together with their (male) infants. Then, drops of blood were shed — but there were no submersions!
Thereafter, at Calvary — where also females of whatever age were elevated and given the sacrament (Acts 8:12 cf. Genesis 3:15f & 4:7) — covenantal circumcision was replaced by baptism (and hence infant circumcision by infant baptism). Genesis 17:7-14; Acts 2:38f; Romans 4:11f; Colossians 2:11-13.
