Revelation knowledge is given by the Holy Spirit to those who read the word of God and then meditate on it. As they pray in tongues while rolling the words they have read in their minds, revelation or GINOSKO comes upon them. Apart from that, if you ask the Holy Spirit to reveal to you what you've read in the bible, he will very faithfully reveal it to you. Revelation knowledge is experiential knowledge that makes you one thing with what has been revealed to you.