I would like to mention a most intriguing incident immediately after the resurrection which we are all familiar with. Two disciples, disconsolate and in despair because the one they believed to be Messiah, was dead. Or so they thought. Then some "stranger" sidles alongside and asks them the cause of their unhappiness. This Stranger did not advise them to listen to the Spirit...nor even to listen to Himself. He gave them a Bible study which revealed Himself. Yes, Jesus is the only Way, Truth, and Life...and as an example Jesus Himself showed that through the scriptures, we can discover who He is, why He came, where He is now, and when we can expect to meet Him face to face. But that isn't the end of there story. That revelation of who Messiah is came first...then, when faith was aroused, He revealed Himself in person. Thus began a renewed relationship.
And so it is with us. The scriptures encourage faith, by learing who Christ is. What He has done. What we can be in Him, and with Him in us. Then, as we accept what is revealed, faith bears fruit and we enter into the kind of knowledge that transcends the written word. Personal, experiential knowledge. Yet because we are all different, such is not the case every single time. While Jesus's Bible study is an example, it is not the ONLY means by which people come to know and recognise the Saviour. In HIs grace and mercy, God will use anything, and anyone, to reach the lost and lonely.
What is the common denominator however is Christ. All roads lead to Him (not Rome) and there are many twisted circuitous routes that through cultures, traditions, sin-laden lifestyles and even religious error, may lead to Jesus. While He is the only Way to the Father, we come to Him in a great variety of ways , and and guess what. Sometimes God may even use our man-made religious formulas to do it.