By Pastor Dr. Ronnie W. Wolfe
This verse is an addendum to verse 90 and continues the thought of God's faithfulness, especially in the sustenance of the universe, its usefulness, and its glory.
They (the heavens and the earth) continue, or are sustained appropriately, by God's divine and decreed order. They may not step out of the bounds of Providence and Sovereignty.
Job 26:10 He hath compassed the waters with bounds, until the day and night come to an end.
The bounds of the waterline of the oceans, the distance of stars, the orbit of the earth, the consistent pattern of God's creation (called nature), and the consistent beauty and harmony of life are all constrained by God's judgment and are not kept in their routine by the minds or hands of men. Neither are any of these protected nor changed by the wisdom or power of men. Man must submit completely to God's judgment in this matter.
It is because that "all are thy servants." Everything that exists and has breath is a servant of God in the sense that God is the Great Judge of all. He is King of all the earth and the heavens. If he is not LORD of all, then he is not LORD at all.
So much, then, should you and I be thankful that God, through his Son, Jesus Christ, chose us as his children, his heritage, and his servants and his saints. We are a chosen generation, a peculiar people, a royal priesthood (1 Peter 2:9), servants of the Most High God.
Let us not belittle our position nor fall short of obedience to our King. Let us serve him with gladness, speak of him when we rise, when we lie down, and when we walk by the way. We owe everything to him, not by debt, but because of his great grace!