The Holy Spirit is commonly referred to as the “third Person of the Trinity.” We first read about the Holy Spirit in Genesis 1:2, “And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.” The Holy Spirit was active in the beginning of the creation of God. This same Spirit is called the eternal Spirit in Hebrews 9:14; therefore the Holy Spirit is just as divine as God the Father and Jesus Christ.
The Bible is filled with Scriptures that relate to the Holy Spirit. If you ever receive anything from God that pertains to your salvation, it will come to you by way of the Holy Spirit. Jesus said in John 3:5 that it is necessary to be born of the Holy Spirit in order to be a true Christian. This is a spiritual birth, and it happens when you repent of your sins and receive Jesus as your Savior. It is also the Holy Spirit Who sanctifies you (2 Thessalonians 2:13; 1 Peter 1:2).
As God, the Holy Spirit understands your most secret thoughts and He sees your secret actions as well. Nothing can be hid from Him. The Holy Spirit tries to get your attention regarding the dangers of sin. He brings a sense of guilt to your heart and mind in order to move you toward repentance of your sins; and if you are attentive to His voice, He will help you find the salvation of God through Jesus Christ. If you refuse to listen to His voice however, and go on in your sinful ways, you will someday meet Jesus Christ as your Judge (Revelation 20:11). For your own eternal welfare, heed the voice of the Holy Spirit.