As the church awaits complete fulfillment in the Millennium, we are called to live by the Spirit now faithfully, humbly, and actively. In the Old Testament period, the Holy Spirit was not the common gift of God to all His people, but was poured out on selected servants with specific commissions to lead and warn God's people. Moses expressed a yearning that all the Lord's people were prophets and that the Lord would put His Spirit on them, highlighting a deep need and longing of that time. On the Day of Pentecost in 31 AD, God began fulfilling Joel's prophecy of His Spirit being poured out on all flesh, marking a turning point where the Spirit was no longer reserved for a few but offered to all believers. Peter, in his sermon on Pentecost as recorded in Acts 2, connected this prophecy from Joel 2:28-32 to the outpouring of the Holy Spirit upon a people that God calls and who answer that call. He quoted Joel, emphasizing that God's Spirit would be poured out, enabling sons and daughters to prophesy, young and old to see visions and dreams, without barriers of age, sex, or position. Peter linked this prophecy to the powerful proclamation of the Gospel in Jerusalem, where everyone heard it in their own language, declaring that this was what Joel spoke of, though not the complete fulfillment as the predicted signs and wonders had not yet occurred. The initial outpouring of the Holy Spirit on the church at Pentecost foreshadows a greater global outpouring yet to come. Joel's prophecy, while partially fulfilled at Pentecost as a type of what would continue in the church, points to a comprehensive fulfillment after the Day of the Lord and Christ's return, extending through the Millennium when God's Spirit will be poured out on many people, including all true believers and eventually all Israel and the Gentile world. The evidence of God's Spirit is seen in a life of repentance, humility, and Christ-like service. When the Holy Spirit came upon the disciples at Pentecost, they immediately began to witness to Jesus Christ, with Peter effectively preaching and about 3,000 people repenting and being baptized. This was a small but powerful precursor of what would happen to both Israelites and Gentiles called into God's church through history. Repentance remains the first evidence of the indwelling of God's Spirit, reflecting a yielding to God's direction as we prepare for Christ's return.

The Holy Spirit, poured out from God, is the power of love and of a sound mind that emanates from Him. It can be breathed, used to fill, and anoint those who receive it. This divine power is given by God to those who have repented, been baptized, and obey His commandments, demonstrating their commitment through attitude and behavior. Through the Holy Spirit, God opens minds to the mysteries of truth by divine revelation, allowing discernment of what is vital to salvation. Beyond this, the Holy Spirit imparts wisdom, understanding, teaches His way of life, comforts, helps, and aids in prayer even when words fail. By giving His Spirit to those He calls, God creates and shapes traits that produce the fruit of the Spirit, evident in actions and works. While God has not offered salvation to all of humanity since Adam's rejection, He began offering His Spirit to those called as firstfruits when Christ established His church. In the World Tomorrow, He will extend this opportunity to everyone. The Holy Spirit delivers from death and leads to the gift of eternal life, a gift neither born with nor earned, but bestowed upon His faithful and obedient children. When the Holy Spirit works within, it is apparent through the production of spiritual fruit, exhibiting a sound mind, empowering comprehension of spiritual matters, producing conversion, and providing strength, will, and faith to overcome sins.

In 31 AD, after His crucifixion, Jesus appeared to His disciples and breathed on them, declaring, Receive you the Holy Spirit. He instructed them that this was a gift from their Father, urging them to wait in Jerusalem to receive it. With the receiving of the Holy Spirit comes the responsibility of living in a manner that reflects this gift, acting as a light to the world through the correct way of living. This responsibility is vital, as it influences Jesus Christ's decision to save the world for the sake of the elect. When Pentecost arrived, the disciples were assembled in unity in one place. Suddenly, a sound like a mighty wind filled the house, though no air moved, creating an awe-inspiring miracle. Above them, fire appeared in the form of cloven, tongue-shaped flames, resting on each of them without heat. They were filled with the Holy Spirit, and the power of God manifested as they began to speak in unfamiliar languages, marveling at this gift. A multitude gathered, and through the Holy Spirit, every man understood the message in his own language and dialect, despite the Galileans' reputation for crude speech. The message conveyed was of the wonderful works of God, marking the introduction of His Holy Spirit to the world in a spectacular fashion. The Holy Spirit is the power of God in action, inspiring and accomplishing feats through individuals. It fills with superhuman strength and great courage, enabling extraordinary acts as seen in the feats of David's mighty men. This Spirit continues to work in behalf of God's people, intervening in times of need. It serves to teach personally, shaping the will of the individual through righteous knowledge, reminding them of Jesus Christ's obedience, faith, and character to imitate His way of living. The Holy Spirit bears witness to the truth, amplifying it amidst a world of persecution and hatred, urging obedience to God's laws through love, kindness, and service. This gift of the Holy Spirit, given as a down payment of inheritance, seals God's people as authentic and approved, marking them as members of His family. It guides into divine truth, freeing from the lies and superstitions of the world, and declares His will individually. Though powerful, the Holy Spirit can be quenched by the attractions of the world if valued more than obedience to God. It provides the power to overcome, developing godly character essential for becoming sons of God, resisting the wiles of Satan through faith and righteous living. God's intent is for this Spirit to remain with His people, influencing their thinking in obedience and filling them with hope for the final transformation into members of His family.

The Holy Spirit is described as the power of God, emanating from the Father and the Son to accomplish His will across creation. In Acts 1, just prior to the Day of Pentecost, the Holy Spirit is shown as the power of the Father, resulting in visions and dreams when received. In Acts 10, during Peter's visit to Cornelius, the Holy Spirit is depicted as falling and being poured out on Cornelius and his group, terms that suggest an inanimate force rather than a personality. Similarly, in Acts 2, the Holy Spirit is described as a rushing mighty wind, filling a whole house and falling on people, further indicating it as a power rather than a person. This power is sent forth from the Father and the Son, enabling communion with God and joining believers into one spiritual family with each other, and with the Father and the Son. In John 16:7, Jesus explains that His return to heaven allows Him to send forth His Spirit anywhere at any time to meet the needs of His people, just as the Father does. The Holy Spirit, as the expression of divine nature given by God, begins creating believers into His kind, the God kind. In Romans 8:9, the Holy Spirit is said to dwell in believers, a concept that challenges the notion of it being a personality. Various scriptures, such as John 3:8 and John 7:37, use metaphors like wind and water to describe the Holy Spirit, emphasizing its invisible and flowing nature, which cannot be reconciled with a personal being. These descriptions consistently portray the Holy Spirit as an inanimate force, the means by which God directs and carries out His purposes in creation.