OK, which translation are you using? Obviously not all translations say 'spirit' at Matthew 1:18. The King James early said ghost. And so we have to figure what it (spirit or ghost) means. And since you are so into the Bible, which is good, I hope you have the consideration to discuss this peacefully and carefully.
In general I use the KJV, the NIV, and others but then compare with Greek diaglots and Hebrew texts.
ghost was just another word for spirit back in that time period. So it means the same thing. Of course I intend to discuss it peacefully and carefully.
I tried to methodically lay it out for you. Giving scripture as proof.
The Father is the only God. - 1 Corinthians 8:6
God is a Spirit. - John 4:24
There is Only one Spirit - Ephesians 4:4
I showed where the Holy Spirit was the Father in Matthew 1:18 (
She was found with child of the Holy Spirit)
Therefore the Father is the Holy Spirit.
As further proof:
God (the Father) said he would pour out his Spirit on all flesh. Joel 2:28 (It's not another Spirit. Remember God is a Spirit, and there is only one Spirit of God.)
God also said he would dwell in his people. God is holy, he is the holy Spirit. If we receive his Spirit then we are the temple of the living God.
1 Corinthians 3:16 ...you are
the temple of God, and the Spirit of God dwells in you.
1 Corinthians 6:19 ...your body is
the temple of the Holy Spirit which is in you. (Carefully compare those two verses.)