I know that the below verse is explained to foretell the coming of the Holy Spirit according to Catholics. Even though the Holy Spirit was already mentioned previously, it is explained that Jesus is saying when he comes he will guide you into all the truth.
12 “I have much more to say to you, more than you can now bear. 13 But when he, the Spirit of truth, comes, he will guide you into all the 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.
I want someone to explain to me the following:
- What exactly has the Holy Spirit guided people to in terms of 'All Truth'.
- Why was this truth something the people at Jesus's time could not bear?
- If it is the Holy Spirit, and if the HS is the 3rd person of the Trinity, why can He not speak on His own?
Note: I'm looking for an answer that fulfills the criteria of the verse 1) cannot bear it now 2) guiding to all truth 3) tell you what is yet to come etc.
In addition, if the Holy Spirit is considered God, why would not speak of his own, but only what he hears? If he is God, he will have authority on his own.
I am asking because I believe it was Tertullian, the famous Church Father, who ended up being declared a heretic because he believed this was referring to a person (it sure sounds like it to me also - the holy ghost was already mentioned to be present anyhow).