While the the primary purpose of the Holy Spirit is to testify of Jesus (John 15:26) and act as the spokesperson of the Father to believers (John 16:13), I believe it behooves us to find out more about Him. After all, He is the power of God who lives in us.
But you shall receive power when the Holy Spirit has come upon you; and you shall be witnesses to Me in Jerusalem, and in all Judea and Samaria, and to the end of the earth.
Let’s take a look at a few examples of what the power of the Spirit can do for us:
And the Spirit of the Lord came mightily upon him, and he (Samson) tore the lion apart as one would have torn apart a young goat, though he had nothing in his hand.
He grants us incredible physical strength in times of danger.
Then Samuel took the horn of oil and anointed him in the midst of his brothers; and the Spirit of the Lord came upon David from that day forward.
(1 Samuel 16:13)
He endows us with the capabilities and wisdom to be leaders.
And when they had prayed, the place where they were assembled together was shaken; and they were all filled with the Holy Spirit, and they (Peter, John and the other disciples) spoke the word of God with boldness.
He emboldens us preach the word or carry out other activities of God.
But God has revealed them to us through His Spirit. For the Spirit searches all things, yes, the deep things of God.
(1 Corinthians 2:10)
He opens our spiritual eyes to understand the truths of God.
Lest we forget, even our Lord Jesus also relied on the power of the Holy Spirit to operate His ministry on earth.
When He had been baptized, Jesus came up immediately from the water; and behold, the heavens were opened to Him, and He saw the Spirit of God descending like a dove and alighting upon Him.
And Jesus went about all Galilee, teaching in their synagogues, preaching the gospel of the kingdom, and healing all kinds of sickness and all kinds of disease among the people.
Shall we not also utilize this power we have at our disposal?
But the manifestation of the Spirit is given to each one for the profit of all: for to one is given the word of wisdom through the Spirit, to another the word of knowledge through the same Spirit, to another faith by the same Spirit, to another gifts of healings by the same Spirit, to another the working of miracles, to another prophecy, to another discerning of spirits, to another different kinds of tongues, to another the interpretation of tongues. But one and the same Spirit works all these things, distributing to each one individually as He wills.
(1 Corinthians 12:7-11)