The children are told to "remain"--they're there, but they're told to stay there.
The Galatians had already received the Spirit (Gal 3:1+).
Galatians were a GROUP of PEOPLE all INDIVIDUALLY Believing (as they with ANY GROUP )Individually Chose.
Some were LECTURED being FOOLS, making FOOLISH choices…Some were REMINDED Abraham IS their Father, “IF” they be “IN” Christ.
It matter NOT WHAT “GROUP” an individual is “associated” with…THEY “individually” must Freely make their “commitment” unto the Lord God.
Your pretense that ALL of the people of Galatian were “SAVED”, “BORN AGAIN”…is NOT Scriptural, is Laughable on it’s face, is as silly as “one who CLAIMS”, “all Christians” ARE “saved and born again”… they are NOT!
Gal 1.
[1] O foolish Galatians, who hath bewitched you, that ye should not obey the truth, before whose eyes Jesus Christ hath been evidently set forth, crucified among you?
(Obvious FOOLISH are NOT IN Christ)
[2] This only would I learn of you, Received ye the Spirit by the works of the law, or by the hearing of faith?
(Obvious FOOLISH is believing, receiving Gods Spirit is by the Law, or because they HEARD scripture.)
[6] Even as Abraham believed God, and it was accounted to him for righteousness.
[7] Know ye therefore
that they which are of faith, the same are the children of Abraham.
AND? BY DEFAULT, “they which ARE NOT” Believing IN GOD…
“ Are NOT INCLUDED, ARE EXCLUDED”.