St. John Chrysostom says: “Here the angel calls the betrothed ‘wife’ because the Holy Bible always calls the betrothed couple
‘man and wife’ before their marriage. “He also says: “What is the meaning of ‘take her to you’? It means: ‘Keep her in your house, as she has been entrusted to you by God and not by her parents; because you are entrusted to take her, not to consummate the marriage but to be he guardian. ‘In the same way, the Lord Jesus Christ Himself entrusted the Virgin Mary to His disciple John" (Homilies on the Gospel of St. Matthew).