The Holy Spirit in Jesus’ Incarnation: Luke 1:35
The Apostles’ Creed says that Jesus Christ, the Son of God:
Was conceived by the Holy Spirit.
This statement does not explicitly declare that the Holy Spirit is fully divine, but it strongly implies this belief. When speaking of Jesus’ conception, the creed alludes to Luke 1:35, where the angel spoke these words 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 (Luke 1:35).
In this verse, the Holy Spirit is equated to the power of the Most High. Only God can have the power of the Most High. So, by alluding to this verse as an example of the Holy Spirit’s work, the Apostles’ Creed affirms the Spirit’s full divinity. This conclusion is confirmed by Hebrews 10:5-7, which says:
Therefore, when Christ came into the world, he said: "Sacrifice and offering you did not desire, but a body you prepared for me; with burnt offerings and sin offerings you were not pleased. Then I said, 'Here I am — it is written about me in the scroll — I have come to do your will, O God'" (Hebrews 10:5-7).
Here, we are told that creating Jesus’ human body was specifically the work of God. In light of verses like these, it is safe to say that when the Apostles’ Creed attributes Jesus’ conception to the Holy Spirit, it intends to affirm the Spirit’s divinity.