4 Verses about the Holy Spirit at work...

1.) His witness with us of Sonship.

 "Salute Andronicus and Junia, my kinsmen, and me fellow-prisoners, who are of note among the apostles, who also were in Christ before me. Greet Amplias my beloved in the Lord." Romans 16: 7-8 (KJV)

2.) His testimony through us to the world. 

"But very truly I tell you, it is for your good that I am going away. Unless I go away, the Advocate will not come to you; but if I go, I will send him to you. When he comes, he will prove the world to be in the wrong about sin and righteousness and judgment: about sin, because people do not believe in me; about righteousness, because I am going to the Father, where you can see me no longer; and about judgment, because the prince of this world now stands condemned." John 16:7-11 (NIV)

3.) His guidance of us into Truth. 

"But as for you, the anointing (the sacred appointment, the unction) which you recieved from Him abides (permanently) in you; (so) then you have no need that anyone should instruct you." 1 John 2: 27 (TAB)

"But when He, the Spirit of Truth (the Truth-giving Spirit) comes, He will guide you into all the Truth (the whole, full Truth). For He will not speak His own message (on His own authority): but He will tell whatever He hears (from the Father; He will give the message that has been given to Him), and He will announce and declare to you the things that are to come (that will happen in the future). He will honor and glorify Me, because He will take of (recieve, draw upon) what is Mine and will reveal (declare, disclose, transmit) it to you." John 16: 13-14 (TAB)

4.) His leadership of us in service.

" And when they fasted and prayed, and laid their hands on them, they sent them away. So they, being sent forth by the Holy Ghost, departed unto Seleucia and from thence they sailed to Cyprus." Acts 13: 3-4 (KJV)