Romans 14:6
the man who values a particular day does so to the Lord. The eater eats to the Lord, since he thanks God for his food; the non-eater abstains to the Lord, and he too thanks God.
Matthew 14:19
Then he ordered the crowds to recline on the grass, and after taking the five loaves and the two fish he looked up to heaven, blessed them, and after breaking the loaves handed them to the disciples, and the disciples handed them to the crowds.
Matthew 15:36
He took the seven loaves and the fish and after giving thanks he broke them and gave them to the disciples, and the disciples to the crowds.
1 Corinthians 10:30-31
If one partakes of food after saying a blessing over it, why should one be denounced for eating what one has given thanks to God for?
John 6:28
Then they asked him, "What must we do to perform the works of God?"
Galatians 4:10
You observe days and months and festal seasons and years!