The scriptures make it very clear that for the message God has for man has to be revealed by God to man.
Without the Ruach HaKodesh (Holy Spirit) one cannot understand the message God has for us.
Believer or Not. Whether you consider yourself a believer or not, seeking God out in prayer and accepting that true understanding will only come by divine revelation is key to moving forward in your journey to knowing the God of Israel.
A suggested prayer. Yehovah, I seek to be taught by you and have revealed to me the message of the bible. I allow your Ruach to be my teacher. Help me to listen and understand. Take me on a journey to knowing you. Teach me all things as you have said. Amen.