John 14:26 New International Version (NIV)

²⁶ But the Advocate, 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.

John 16:12-15 New International Version (NIV)

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. ¹⁴ He will glorify me because it is from me that he will receive what he will make known to you. ¹⁵ All that belongs to the Father is mine. That is why I said the Spirit will receive from me what he will make known to you.”

1 Corinthians 2:9-16 New International Version (NIV)

⁹ However, as it is written:

¹⁰ these are the things God has revealed to us by his Spirit.

The Spirit searches all things, even the deep things of God. ¹¹ For who knows a person’s thoughts except their own spirit within them? In the same way no one knows the thoughts of God except the Spirit of God. ¹² What we have received is not the spirit of the world, but the Spirit who is from God, so that we may understand what God has freely given us. ¹³ This is what we speak, not in words taught us by human wisdom but in words taught by the Spirit, explaining spiritual realities with Spirit-taught words.^{[b] 14} The person without the Spirit does not accept the things that come from the Spirit of God but considers them foolishness, and cannot understand them because they are discerned only through the Spirit. ¹⁵ The person with the Spirit makes judgments about all things, but such a person is not subject to merely human judgments, ¹⁶ for,

But we have the mind of Christ.

1 John 2:27 New International Version (NIV)

²⁷ As 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.