Deuteronomy 8:10

When thou hast eaten and art full, then thou shalt bless
the Lord thy God
For as the Lord would furnish them with plenty of food, they might eat of it liberally, provided they did not indulge to intemperance, as everyone may whom God has blessed with a fulness of good things; and this shows that we are to return thanks to God for a plentiful meal, as well as to ask a blessing on it:

for the good land which he hath given thee;
which supplied them with such plenty, that they enjoyed full meals every day.