Lots of people are joined to Jesus by faith without knowing scripture. Lots have to go through life thinking they know scripture but knowing a set of false or dubious or uncertain views of what scriptures say and mean so are also forced to unknowingly live without scripture. We don't know if that includes us. We need the Holy Spirit to lead us into both truth and certainty of it or we are still without real righteousness. The way is truth and faith but with or without true comfort of scripture as an extra. Scripture alone is no way to be made righteous. Faith is required in truth even if scripture helps us find such faith and truth but grace is more effective when God gives it. Apollos is an example recorded in the scripture book of Acts. He knew only scripture and presched accurately about Jesus through that knowledge. The friends of Paul taught him better because they had learned not by scripture (or scripture aline perhaps) alone but by grace so they could improve his knowledge and he became known as an apostle like Paul.
