Heb 1:1-2 (ESV) “Long ago, at many times and in many ways, God spoke to our fathers by the prophets, 2 but in these last days he has spoken to us by his   Son, whom he appointed the heir of all things, through whom also he created the world. “

In the past God spoke to us in many ways, however, God sent his son Jesus who is the word of God. Jesus sent the Holy Spirit so that the Apostles could remember what he had said. (John 14:26) Those people that were eye witnesses wrote out the New Testament or searched out the truth from those that did see everything. (Luke 1:1) The New Testament has everything you need for salvation. There is no need for anymore revelation.