I suspect it is your lack of comprehension skills that makes me seem contradictory.
The believer has a
down payment of the Holy Spirit, not the fullness:
P
"
21 Now it is God who makes both us and you stand firm in Christ. He anointed us,
22 set his seal of ownership on us, and put his Spirit in our hearts
as a deposit,
guaranteeing what is to come." - 1 Corinthians 2:21-22
We get the rest in the age to come.
Once saved, always saved,
as long as you keep believing.
Why can't you comprehend this?