What the Bible says about Giving Thanks in Everything
(From Forerunner Commentary)
Jesus gives public thanks to God for the food, revealing the importance of acknowledging who provides everything and from whom blessing comes. Thanksgiving is the primary ingredient in receiving blessings from God.
People who neglect a close relationship with God forget to appreciate and thank Him for His daily, continual miracles. Paul writes, "Because, although they knew God, they did not glorify Him as God, nor were thankful, but became futile in their thoughts, and their foolish hearts were darkened" (Romans 1:21). Yet, he commands the saints, "In everything give thanks; for this is the will of God in Christ Jesus for you" (I Thessalonians 5:18).
Martin G. Collins
The Miracles of Jesus Christ: Feeding the Five Thousand (Part One)