For it is sanctified through the word of God and prayer.
Some believe Paul is referring in this verse to citing scripture in prayer (Moffat, Goodspeed, Lenski, and Vincent). This belief, however, seems forced. It seems evident, though, that Christians are obligated to offer thanks and ask God’s blessing for their food before they eat (Matthew 14:19; Matthew 15:36; Acts 27:35), but suggesting God sees merit in repetitious quoting of scriptures during the prayer seems incongruent with God’s nature.