That is your own opinion and belief, but not what the Scriptures actually teach. Everyone has an opinion, and that is why we have thousands of Christian denominations. But what does God say, and whom will you believe?
We are children of God by faith, before ever receiving the Spirit.
Galatians 3:26 (WEB) 26 For you are
all children of God,
through faith in Christ Jesus.
And because we are children of God, which is by faith, the Spirit indwells us.
Galatians 4:6 (WEB) 6 And
because you are children, God sent out
the Spirit of his Son
into your hearts, crying, “Abba,[
a] Father!”
When did the New Covenant of the Spirit poured out on believers begin? Did the New Covenant in the Spirit begin in the Old Covenant?
Acts 2:32 (WEB) 32 This Jesus God raised up, to which we all are witnesses. 33 Being therefore exalted by the right hand of God, and having received from the Father the promise of the Holy Spirit, he has poured out this, which you now see and hear.
The Spirit of God has always been at active, working with the Word of God, but the
indwelling of the Spirit is a promise only in the New Covenant. That is what makes the New Covenant so special, in that God will now dwell in us by faith, all of which Lord Jesus purchased with His own blood.
John 14:15-17 (WEB) 15
If you love me, keep my commandments. 16 I will pray to the Father, and
he will give you another Counselor, that he may be with you forever: 17
the Spirit of truth, whom the world can’t receive; for it doesn’t see him and doesn’t know him. You know him, for
he lives {{{
with}}}
you, and
will be {{{
in}}}
you.
Ephesians 1:13-14 (WEB) 13 In him you also,
having heard the word of the truth, the Good News of your salvation—in whom,
having also believed, you were sealed with the
promised Holy Spirit, 14 who is a pledge of our inheritance, to the redemption of God’s own possession, to the praise of his glory.