Have you ever heard of Madame Guyon? She lived in the 16th century I believe. She taught a silent prayer and believed you could have union with God. The titles of her books are...Experiencing the Depths of Jesus Christ, Union with God and Experiencing Union with God through Inner Prayer. She was put in prison, can you guess why?
One tenet of Judaism and Christianity is that God seeks men, not the other way around, which is linked to the doctrine of election that is taught in the scriptures.
God saves whomever He wills to be saved-- if that person never had the opportunity to hear and receive the Gospel, then God deals with him differently. We don't pretend to tell God what to do
Jesus baptizes with the Holy Spirit and all believers have union with God through the Holy Spirit.