Bede

David, however, was the son of an Ephrathite man. David indeed, as always, is the Lord Christ, who is the son of an Ephrathite man, that is, a fruitful one; because from that ancient people of the Hebrews, who by believing bore many fruits of righteousness, he deigned to take flesh. Although he is also always born and nurtured in the fruitful heart of his faithful ones through love. …

Commentary on Samuel ↗