John 6:45 It is written in the prophets, And they shall be all taught of God. Every man therefore that hath heard, and hath learned of the Father, cometh unto me.
[It is written! They will all be taught of God. It is conditional. Everyone who "listens" to the Heavenly Father and "learns" from Him comes to Christ. See the other places it is written in the prophets: Isaiah 2:3, 54:13; Jeremiah 31:33-34; and Micah 4:2. Ask yourself, will there be those that don't listen and learn of God? Look around you today].
Taught = word # G1318 in a Strong's Concordance; (subjectively) instructed, or (objectively) communicated by teaching:—taught, which … teacheth.
John 14:26 But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you.
[Ghost = Spirit, the Holy Spirit. God's Spirit is not a spook. But when the Father sends the Comforter, as His representative, His Spirit will teach you everything and will remind you of everything that you have been told by Christ. I believe this applies to us today also. Where do you learn what Christ has said? In His word, of course].
John 15:26 But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall testify of me:
[Christ will send us the "Holy Spirit" of truth. He will come from the Father and will testify all about Christ. What does the Holy Spirit teach us? Truth. Where does that truth come from? See John 17:17].
1 Thessalonians 4:9 But as touching brotherly love ye need not that I write unto you: for ye yourselves are taught of God to love one another.
[I'm sad to say, it is quite obvious today that many have not listened to and learned of God].
Many do not like the word “obey”. But, many need to be taught and learn, the Holy Spirit is given to all who obey Him, (Acts 5:32). What happens to those that do not open up to being taught, learn from and obey Him? The opposite. This is a choice we all have to make. Again, where do you go to learn from Him? See John 17:17 again for your answer. Study the Bible completely my friends. You will be amazed at what you can learn. Another reason why you should study is explained in 2 Timothy 2:15. There is only the Bible, the single source of power that will change our lives from the inside out. But it takes effort, diligent, everyday effort, to know the God who controls everything. If we drink deeply of His Word and let it fill our minds and hearts, the sovereignty of God will become clear to us, and we will rejoice in it because we will know intimately and trust completely the God who controls all things for His perfect purpose.