What the Bible says about Dominion over Creation
(From Forerunner Commentary)
"Tend" and "keep"—We might say "embellish" and "guard" or "add to" and "keep from deterioration." Anybody who has taken care of a piece of material equipment of some kind—a garden, a house, an automobile, clothing, it matters not—knows that one can embellish it, dress it, and that it takes work. It also takes work to maintain it, to guard it from falling into a state of disrepair.
God's real purpose here has something to do with the material things of life, but He is considering something much greater than that, something spiritual. He is indicating that spiritual things in our lives are also going to have to be embellished, added to, dressed, and they will have to be kept from deteriorating and guarded. There is work involved in those activities. Proper management, or dominion, over the things that God has put within the scope of our authority take work. So, both of these words indicate work.
John W. Ritenbaugh
Love's Greatest Challenges
It is God's will for us to be thankful because He knows that it is good for us to have an attitude of thankfulness towards Him. When we have a thankful attitude and an attitude of appreciation for Him and what He does for us, it does not leave much room for ingratitude in our lives.
In reading Psalm 8:3-6, we can see ourselves in perspective to God's creation:
When I consider Your heavens, the work of Your fingers, the moon and the stars, which You have ordained, what is man, that You are mindful of him, and the son of man that You visit him? For You have made him a little lower than the angels, and You have crowned him with glory and honor. You have made him to have dominion over the works of Your hands; You have put all things under his feet. . . .
God has given us—humanity—dominion over the things that He has created. And beyond that, out of all humanity, we have been given a tremendous responsibility to develop righteous character and have the potential of living eternally in His Kingdom. This thought alone should help us to be thankful each day.