What Gabriel said about the Spirit was how Mary conceived. Aside from that, Mary’s “motherhood” was similar to “surrogacy”. Meaning that, nothing in the “human composition” of Jesus, did an “egg” from Mary or “sperm” from Joseph or anyone, contribute to his being. Remember, he was not of this earth; he was “from above” (Jn 8:23). He was the incarnate YHVH ELOHIM Creator of Gen 1 & 2, the Logos in John 1.