John 14:25-26; NASB 25 “These things I have spoken to you while abiding with you. 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 that I said to you.
John 15:26; 26 “When the Helper comes, whom I will send to you from the Father, that is the Spirit of truth who proceeds from the Father, He will testify about Me
Some critics will say that the above scriptures contradict themselves. However proper exegesis clearly points to God, (both God and the Son and God the Father) had sent the Holy Spirit. If you read John 15:26, it reads that Jesus sent the “helper” “from” through the Father. By clear reasoning both persons were sending the Holy Spirit.