John 14:26:

But the Helper, the Holy Spirit, whom the Father will send in My name, He will teach you all things, and bring to your remembrance all things that I said to you.

Acts 2:17-19:

17 ‘And it shall come to pass in the last days, says God, That I will pour out of My Spirit on all flesh;

Your sons and your daughters shall prophesy, Your young men shall see visions,

Your old men shall dream dreams.

18 And on My menservants and on My maidservants I will pour out My Spirit in those days; And they shall prophesy.

19 I will show wonders in heaven above And signs in the earth beneath:
Blood and fire and vapor of smoke.