One of the promises of the new covenant as prophesied by Jeremiah is that God will Himself teach us all about Him.
No longer will a man teach his neighbor, or a man his brother, saying, 'Know the LORD,' because they will all know me, from the least of them to the greatest," declares the LORD. "For I will forgive their wickedness and will remember their sins no more." (NIV)
This again is taken up in the Book of Hebrews :
No longer will a man teach his neighbor, or a man his brother, saying, 'Know the Lord,' because they will all know me, from the least of them to the greatest(NIV).
Jesus came to fulfil this prophecy of Jeremiah by sending the Holy Spirit, the Spirit of truth to be our teacher who now lives in us.
12"I have much more to say to you, more than you can now bear. 13But when he, the Spirit of truth, comes, he will guide you into all truth. He will not speak on his own; he will speak only what he hears, and he will tell you what is yet to come. 14He will bring glory to me by taking from what is mine and making it known to you. 15All that belongs to the Father is mine. That is why I said the Spirit will take from what is mine and make it known to you(NIV).
The work of the Holy Spirit is further described as searching the deep recesses of God and making them known to us :
(1 Corinthians 2:9-23)
However, as it is written: "No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him"[b]— 10but God has revealed it to us by his Spirit. The Spirit searches all things, even the deep things of God. 11For who among men knows the thoughts of a man except the man's spirit within him? In the same way no one knows the thoughts of God except the Spirit of God. 12We have not received the spirit of the world but the Spirit who is from God, that we may understand what God has freely given us. 13This is what we speak, not in words taught us by human wisdom but in words taught by the Spirit, expressing spiritual truths in spiritual words.(NIV)
The Spirit of Truth will teach and remind us of all truth and guard us against falsehood.
26But the Counselor, the Holy Spirit, whom the Father will send in my name, will teach you all things and will remind you of everything I have said to you.(NIV)
(1 John 2:26-27)
26I am writing these things to you about those who are trying to lead you astray. 27As for you, the anointing you received from him remains in you, and you do not need anyone to teach you. But as his anointing teaches you about all things and as that anointing is real, not counterfeit—just as it has taught you, remain in him. (NIV).
Saul of Tarsus, in his encounter with Jesus on the road to Damascus was made blind to the physical realm so that he could have a new vision in spiritual things. Gamaliel, his former teacher, was no longer qualified to teach Paul in the things of God. It was no longer any man that taught him but the anointing. The epistles that Paul wrote that we have today are testimonies to the prophecy of Jeremiah 31:34. Paul’s experience inspired him to pray for the Ephesians:
17I keep asking that the God of our Lord Jesus Christ, the glorious Father, may give you the Spirit[f] of wisdom and revelation, so that you may know him better. 18I pray also that the eyes of your heart may be enlightened in order that you may know the hope to which he has called you, the riches of his glorious inheritance in the saints, 19and his incomparably great power for us who believe. That power is like the working of his mighty strength, 20which he exerted in Christ when he raised him from the dead and seated him at his right hand in the heavenly realms, 21far above all rule and authority, power and dominion, and every title that can be given, not only in the present age but also in the one to come. 22And God placed all things under his feet and appointed him to be head over everything for the church, 23which is his body, the fullness of him who fills everything in every way.
Praise God. Let the teacher living in us, the anointing, enlighten the eyes of our hearts so that we can learn and know of the riches He has in store with us. Rejoice.