The Helper, the Holy Spirit, whom the Father will send in My name. 

If you knew the gift of God, and who it is who says to you, “Give Me a drink,” you would have asked Him, and He would have given you living water. § If you … , being evil, know how to give good gifts to your children, how much more will your heavenly Father give the Holy Spirit to those who ask Him! § Most assuredly, I say to you, whatever you ask the Father in My name He will give you. Until now you have asked nothing in My name. Ask, and you will receive, that your joy may be full. § You do not have because you do not ask.When He, the Spirit of truth, has come, He will guide you into all truth; for He will not speak on His own authority, but whatever He hears He will speak; and He will tell you things to come. He will glorify Me, for He will take of what is Mine and declare it to you.They rebelled and grieved His Holy Spirit; so He turned Himself against them as an enemy, and He fought against them.