When Nicodemus came to see JESUS at night (privately), JESUS gave Him the key to obtaining eternal life, which is life as God has within Himself! John 3:2-3 says this:
Apparently this plan of God's was NOT hidden from the Jewish people because JESUS said this to Nicodemus in response, in verse 10:
Jesus replied, Are you the teacher of Israel, and yet do not know nor understand these things? [Are they strange to you?]
God's plan of salvation for all of mankind was NOT hidden from man. He declared it Himself in Genesis after the fall of Adam. BUT, we will only KNOW the Word, IF we follow on to know the Word! Many never bothered. THAT is why so many people today do not have a personal relationship with the Lord their God! JESUS also tells us the 'how to" for this instruction. John 3:16-18 reveals the heart and plan of Almighty God for mankind!
AMEN! THIS is the most important question that you will ever be asked in your lifetime! "What have you done with JESUS?" I hope that YOU can answer with "JESUS is my LORD and personal SAVIOR!" Thank You, JESUS! Here is Hillsong with "No Reason To Hide":
Shalom in Him!