Galatians says God knew them.
Galatians 4:9 KJV
"now, after that ye have known God, or rather are known of God"
They are true believers, being known by God, not fake believers to whom Christ will say, "I never knew you" to. Yet these true believers fell away in unbelief from justification in Christ to justification by the law. Which Calvinism says is impossible for true believers to do. Obviously, Calvin was wrong about that. His is a later doctrine brought into the church that the early church fathers, before the Catholic Church, did not believe and did not teach.
Like I said I was caught up into the False Prophet Kenneth Copeland for about 2 or 3 months in my life, but I Repented and turned back to the true Teachers, REMEMBER PAUL WARNED:
Philippians 3:17-20 (HCSB)
17 Join in imitating me, brothers, and observe those who live according to the example you have in us.
18 For I have often told you,
and now say again with tears, that many live as enemies of the cross of Christ.
19 Their end is destruction; their god is their stomach; their glory is in their shame. They are focused on earthly things,
20 but our citizenship is in heaven, from which we also eagerly wait for a Savior, the Lord Jesus Christ.
Acts 20:28-32 (HCSB)
28 Be on guard for yourselves and for all the flock that the Holy Spirit has appointed you to as overseers, to shepherd the church of God, which He purchased with His own blood.
29 I know that after
my departure savage wolves will come in among you, not sparing the flock.
30 And
men will rise up from your own number with deviant doctrines to lure the disciples into following them.
31 Therefore be on the alert, remembering that night and day for three years
I did not stop warning each one of you with tears.
32 “And now I commit you to God and to the message of His grace, which is able to build you up and to give you an inheritance among all who are sanctified.
So apparently you did not head the WARNING. The Galatians that DID are KNOW BY HIM.
You do not come through the NARROW GATE IN GROUPS. The Holy Spirit Ushered us though individually.