The Holy Spirit is the third person of the divine trinity. He is not less God than the Father and the Son. Rather, all three persons are co-equally God all at the same time. The Holy Spirit of God plays a vital role in the salvation and life of a believer in Jesus. Without the power of the Spirit, nothing of the gospel message can be fully received nor truly lived out. To rightfully embrace the Father and His son, Jesus Christ, we must depend on the Holy Spirit.
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 14:26)