Sound Doctrine

Following is an excerpt from my booklet, The Essentials of the Faith, which is available from Sound Doctrine Ministries. I pray it will bless you.
The Virgin Birth

The doctrine of the virgin Birth of Jesus Christ is prophesied by Isaiah in Isaiah 7:14:

The virgin will be with child and will give birth to a son, and will call him Immanuel.
“Immanuel” means “God with us.” Two chapters later (9:6), Isaiah prophesies that this child will be called “Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace.” No doubt these verses refer to Christ’s deity as well as His virgin birth. In the doctrine of the virgin birth the Holy Spirit (third person of the Trinity) plays a major role along with the virgin Mary. By the agency of the third person of the Trinity, the second person of the trinity, the eternal Word (John 1:1), took on flesh. Thus we read in Luke 1:35 as the angel speaks to Mary:

The Holy Spirit will come upon you, and the power of the Most High will overshadow you. So the holy one to be born will be called the Son of God.
We also read in Matthew 1:18, 20:

This is how the birth of Jesus Christ came about. His mother Mary was pledged to be married to Joseph, but before they came together, she was found to be with child through the Holy Spirit . . . . But after he [Joseph] had considered this, an angel of the Lord appeared to him in a dream and said, “Joseph, son of David, do not be afraid to take Mary home as your wife, because what is conceived in her is from the Holy Spirit.”
Remember that the virgin birth of Jesus was not the beginning of His existence. He always existed, eternally existed, as the Word. At the incarnation through the virgin birth He took the form of a man. At the incarnation He was God in human flesh.
The Deity and Personality
of the Holy Spirit

Christian orthodoxy throughout the centuries has held that the Holy Spirit is God and that He is a person.
The Deity of the Holy Spirit

Acts 5:3, 4

Then Peter said, “Ananias, how is it that Satan has so filled your heart that you lied to the Holy Spirit and have kept for yourself some of the money you received for the land? Didn’t it belong to you before it was sold? Wasn’t the money at your disposal? What made you think of doing such a thing? You have not lied to men but to God.”
Here Peter says that to lie to the Holy Spirit is to lie to God. Peter equates the Holy Spirit with God. Hebrews 9:14

How much more, then, will the blood of Christ, who through the eternal Spirit offered Himself unblemished to God, cleanse our consciences from acts that lead to death, so that we may serve the living God.
The Holy Spirit is eternal.
Divine Attributes of the Holy Spirit:

Omnipresence: Psalm 139:7-10 Omniscience: 1 Corinthians 2:10, 11 Sovereign Omnipotence: 1 Corinthians 12:11 Eternal: Hebrews 9:14 Takes part in the creating of all things: Genesis 1:2; Job 33:4 Holy Spirit mentioned in conjunction with the Father and the Son: Matthew 28:19; 2 Corinthians 13:14
Personality of the
Holy Spirit

Only a person can do the following: Speak: Acts 13:2 Teach: John 14:20 Send out workers: Acts 13:4 Be lied to and tempted: Acts 5:3, 4, 9 Be grieved: Ephesians 4:30 Be blasphemed: Matthew 12:31 Exercise will: 1 Corinthians 12:11 These are all attributes of personhood.