The Holy Spirit is at work all around us, although we may not realize it. The Holy Spirit is the third person of the Trinity and is continuously at work in the world in which we live. God’s word teaches us that God the Father, Son, and Holy Spirit have existed for all eternity. Although the Holy Spirit was poured out upon the earth ten days after Jesus ascended into heaven on Pentecost, His work did not start then. In the Old Testament, the Holy Spirit came upon people for a time to accomplish God’s plan through them. After Pentecost, the Holy Spirit dwells in every believer.
The Holy Spirit was at Work in Joseph
Joseph was summoned from prison to interpret Pharaoh’s dream because his magicians could not. Giving all credit to the Lord, Joseph interprets Pharaoh’s dream and gives him wise advice. Pharaoh is so impressed with Joseph’s humility and wise counsel that he makes him second only to him in Egypt.
Pharaoh also observes how Joseph is filled with the Spirit of God. Genesis 41:37 Joseph’s suggestions were well received by Pharaoh and his officials. 38 So Pharaoh asked his officials, “Can we find anyone else like this man so obviously filled with the spirit of God?” 39 Then Pharaoh said to Joseph, “Since God has revealed the meaning of the dreams to you, clearly no one else is as intelligent or wise as you are. 40 You will be in charge of my court, and all my people will take orders from you. Only I, sitting on my throne, will have a rank higher than yours.” 
The Holy Spirit is at Work Today
There are many ways the Holy Spirit works in believers in Jesus, with the common goal of making us more like Jesus our Savior. Paul tells us in Romans 12:2 that the Holy Spirit works to renew our minds to be more like Jesus. The Holy Spirit changes our thoughts by convicting us of our sin to lead us to repentance. To repent is to turn away from our sin and turn toward God. When we turn from our sin, we can begin to be good soil for the Lord to work in instead of a hardened heart.
In this good soil, we can grow in fruits of the spirit as believers. Galatians 5:22 But the Holy Spirit produces this kind of fruit in our lives: love, joy, peace, patience, kindness, goodness, faithfulness, 23 gentleness, and self-control. There is no law against these things!  As we grow in faith in our relationship with the Lord, the Holy Spirit will guide us away from aspects of our life that do not please the Lord. As we obey the guidance of the Holy Spirit over time, He transforms us to become more like Jesus.
To learn how the Holy Spirit is at work, listen here: