They should a lot of the things within your church are taken straight from the Jewish. Mikcvahs point to something concerning baptism.
I agree that some things in the liturgies appear to have their roots[SUP]
*[/SUP] in the old covenant ceremonies and rites and some appear to have their roots[SUP]
*[/SUP] in the synagogue practises of the first century of the Christian era. Christian baptism has its roots in the baptism of saint John the Baptist and John's baptism may (or may not) have its roots in this or that washing ceremony of first century Judaism but the baptism of saint John the Baptist differed from the washings of the Pharisees in their synagogues and it differed from the practises of the Sadducees in the temple because the holy scriptures tell us how upsetting saint John the Baptist's baptism practise was to them and how disruptive of their religious authority it was.
Saint John the Baptist's baptism may or may not have included submersion and it may or may not have included pouring and it is possible that it may or may not have included sprinkling because the holy scriptures do not describe in detail what he did when he baptised and since his baptism was not Christian baptism we must discover what Christian baptism is by consulting the passages of holy scripture that I referred to in a previous post; specifically these passages: Mat 28:19; Mar 16:16; Joh 3:5; Joh 3:22; Joh 4:1-2; Act 1:5; Act 1:22; Act 2:38; Act 2:41; Act 8:12-13; Act 8:16; Act 8:36-38; Act 9:18; Act 10:46-48; Act 16:14-15; Act 16:33; Act 18:8; Act 18:25; Act 19:4-5; Act 22:16; Rom 6:3-4; 1Co 1:13-17; 1Co 10:1-2; 1Co 12:13; 1Co 15:29; Gal 3:27; Eph 4:5; Eph 5:26; Col 2:12; Heb 6:2; 1Pe 3:18; 1Pe 3:21. In them there is no command to submerge nor to pour nor to sprinkle so when a claim is made that because Jews submerge in this or that religious rite of rabbinic Judaism today or did so in some century after the first century of the Christian era it is quite irrelevant to what Christians ought to do in Christian baptism.
* The actual source for the liturgies of the Christian Church are found in the heavenly pattern from which the tabernacle and temple ceremonies were drawn as shadows and images. The liturgies of Christianity are the earthly and visible forms of the heavenly realities and this is explained in the book of
Hebrews and in
The Apocalypse of saint John the theologian.