I walk in the Spirit. This is how I keep the commandments.
If all you say is true of you, how do you not know that you are indeed a child of God?
There is a dynamic in human nature that allows anyone to have a level of deception in their understanding.
That level of deception may disqualify a person from salvation depending on the type and depth of that deception.
The Galatian church was in serious danger of falling from grace, fact.
The Galatian church had been deceived into thinking that they must be circumcised which is obeying the law.
Please read what Paul states in his letter to the Galatians.
Galatians 3:1-5
You foolish Galatians! Who has bewitched you? Before your very eyes Jesus Christ was clearly portrayed as crucified.
I would like to learn just one thing from you:
Did you receive the Spirit by works of the law, or by hearing with faith?
Are you so foolish?
After starting in the Spirit, are you now finishing in the flesh? Have you suffered so much for nothing,
if it really was for nothing?
Does God lavish His Spirit on you and work miracles among you because you practice
the law, or because you hear and believe?
1 Thessalonians 1:5
For our gospel did not come to you in word only,
but also in power and in the Holy Spirit and with full conviction; just
as you know what kind of men we proved to be among you for your sakes.
It is impossible to read the N.T and not accept the full power of the Holy Spirit.
How can you ask me "how do you not know that you are indeed a child of God"?
The bottom line in all of this is I cannot know and nor can you know whether our experience as a Christian.
Is an authentic experience or whether unbeknown to us we have been deluded.