I would have to agree that each of us are responsible for the Light imparted to us. I feel a person can accept Jesus in their heart and be of another religion- including Muslim. when they die, they will be greeted by Jesus- and will feel at HOME with Him because they already accepted HIm into their heart.
The Holy Spirit has ways of speaking into every human- He does so in a quiet way. Our minds are most often not aware of the spiritual communication between God and our spirits. A person may accept JEsus as their Savior and Lord in thier spirit, --and that's all that counts in God's eyes.
If He sees fit for them to mentally confirm this spiritual acceptance while still phsycially alive , they are given the opportunity via a missionary, a book, tract, etc, to become more enlightened mentally .
Many who are born Christians ironically havnt accepted Jesus into their hearts as Savior and Lord- and are in the danger of God telling them, "I never knew you" when they die.
The knowing is a spiritual communion we have with God in spirit. Many have accepted Jesus via the Holy Spirit who are of different religions-- who the Holy Spirit reveals to them the PERSON of Jesus in thier spirits, but who have yet to understand Him mentally. They may die and then this part is also revealed to them- as they run into His arms.
It is just as in the incident of Jesus enlightening the blind man who was rejected by the pharisees and his parents. The blind man called Jesus "Lord" after Jesus opened his eyes and he was healed from blindness.
Then this man saw JESUS- His LORD, first in his spirit and then afterwards with his mind and physical eyes.
True healing takes place in a person's spirit before it takes place in the physical. as God heals the spirit first, then the body.
So a person can be given the choice to accept Jesus in spirit --and they say "YES" to Him, then later their minds become opened, wether on this side of Heaven or right at death before they enter Heaven. God reads the condition of the persons' heart.
Many alzheimer patients are communeing with God right now- and though their souls are stuck in their bodies and brains-- their spirits may be in a very elevated maturity, growing and being nurtured by the Holy Spirit.
P.S-- What I have just typed towards the end of my post is not my words, but flowed out of my keyboard as I was typing.