Mat Matthew, chapter The Gospel According to Matthew, chapter 1
When Joseph learned that Mary was pregnant, he decided to divorce her, but an angel told him to take her as his wife because it was the power of the Holy Spirit that had enabled her to be pregnant
Matthew 1:18-25
She will give birth to a son. Since it is he who will cause that his people will be saved from the guilt of their having sinned, name the baby Jesus, which means ‘the Lord saves people’.” Luk 1:31; Act 4:12; 1Jn 2:2; Rom 3:24