Well… The specific date is not essential to what I was trying to say… Evidence that an individual taught a thing does not imply that the teaching was universal.
Well… you did bring the date up

And respectfully, dates ARE in fact, important.
However, I agree with you that evidence of an individual taught a thing does not imply that the teaching was universal. However, how many “individuals” do you need, without ANY voices saying anything contrary, when is it enough to show it was a universal teaching?
From
This Rock
*The Epistle of Barnabas *
"Now let us see if the Lord has been at any pains to give us a foreshadowing of the waters of baptism and of the cross. Regarding the former, we have the evidence of Scripture that Israel would refuse to accept
the washing which confers the remission of sins and would set up a substitution of their own instead… [circa A.D. 70]).
Hermas
" ‘I have heard, sir,’ said I, ‘from some teacher, that there is no other repentance except that which took place when we went
down into the water and obtained the remission of our former sins.’ He said to me, ‘You have heard rightly, for so it is’<|>" (
The Shepherd 4:3:1-2 [A.D. 140]).
Theophilus
“Moreover, those things which were created from the waters were blessed by God, so that this might also be a sign that men would at a future time **receive repentance and remission of sins through water and the bath of regeneration–all who proceed to the truth and are born again **and receive a blessing from God” (
To Autolycus 12:16 [A.D. 181]).
Justin Martyr
“Whoever are convinced and believe that what they are taught and told by us is the truth, and professes to be able to live accordingly, is instructed to pray and to beseech God in fasting for the remission of their former sins, while we pray and fast with them. Then they are led by us to a place where there is water, and** they are reborn in the same kind of rebirth in which we ourselves were reborn: In the name of God, the Lord and Father of all, and of our Savior Jesus Christ, and of the Holy Spirit, they receive the washing of water.** For Christ said, ‘Unless you be reborn, you shall not enter the kingdom of heaven.’…The reason for doing this, we have learned from the Apostles” (
The First Apology 61:14-17 [inter A.D. 148-155]).
Tertullian
"A treatise on our sacrament of water, by which the sins of our earlier blindness are washed away and we are released for eternal life will not be superfluous… Taking away death by the washing away of sins. The guilt being removed, the penalty, of course, is also removed…
Baptism itself is a corporal act by which we are plunged into the water, while its effect is spiritual, in that we are freed from our sins" (
On Baptism 1:1, 5:6, 7:2 [inter A.D. 200-206]).
Clement of Alexandria
“When we are baptized we are enlightened. Being enlightened, we are adopted as sons. Adopted as sons, we are made perfect. Made perfect, we become immortal… ‘and sons of the Most High’ [Ps. 81:6]. This work is variously called grace, illumination, perfection, and washing.
It is a washing by which we are cleansed of sins, a gift of grace by which the punishments due our sins are remitted, an illumination by which we behold that holy light of salvation–that is, by which we see God clearly, and we call that perfection which leaves nothing lacking. Indeed, if a man know God, what more does he need? Certainly, it were out of place to call that which is not complete a true gift of God’s grace. Because God is perfect the gifts he bestows are perfect” (
The Instructor of Children, 1:6:26:1 [ante A.D. 202]).
Origen
"Formerly there was baptism in an obscure way…now, however, in full view,** there is regeneration in water and in the Holy Spirit**. Formerly, in an obscure way, there was manna for food; now, however, in full view, there is the true food, the flesh of the Word of God, as he himself says: ‘My flesh is true food, and my blood is true drink’ (John 6:56) (
Homilies on Numbers 7:2 [post A.D. 244]).
Aphraates
“From baptism we receive the spirit of Christ. At that same moment in which the priests invoke the Spirit, heaven opens, and he descends and rests upon the waters, and those who are baptized are clothed in him. The Spirit is absent from all those who are born of the flesh, until they come to the water of rebirth, and then they receive the Holy Spirit**…
n the second birth, that through baptism, they receive the Holy Spirit” (
Treatises 6:14:4 [inter A.D. 336-345]).**