“And the angel said unto her, The Holy Ghost shall come upon thee...that holy thing which shall be born of thee shall be called the Son of God.” Luke 1:35 (KJV)
God is working the same way today as He did in the ‘Christmas Story’.
When anyone hears the Word of God, the Holy Spirit comes upon them. He comes upon the person and draws the person to truth of Jesus.
When the person, like Mary, says, ‘let it be unto me as you say’, then the Holy Spirit comes in. He comes IN, to take hold of His own. That is being, Born of God, “...that Holy Thing shall be Born in you...the Son of God”.
When you hear or read the words from the Bible know the Holy Spirit is upon you to come into you to make you Born of God...Holy. “Be Holy as I am Holy”, says the Lord.