How doth God execute his decrees?

God executeth his decrees in the works of creation and providence.[1]

Revelation 4:11 (NASB)

Worthy are You, our Lord and our God, to receive glory and honor and power; for You created all things, and because of Your will they existed, and were created.

God created the heavens and the earth and the sea and all that is in them; therefore, he is worthy of all glory and honor and praise. Nothing exist that God did not will, for he created all things that exist from nothing. 

Daniel 4:35 (NASB)

All the inhabitants of the earth are accounted as nothing,

But He does according to His will in the host of heaven

And among the inhabitants of earth;

And no one can ward off His hand

Or say to Him, “What have You done?”

This was the confession of Nebuchadnezzar, king of Babylon. Once brought low by God, God returned him to reason; understood and proclaimed that God does what he wants, however he wants to do it, and there is nothing that a mere man can to do to thwart the providence of God.

[1] The Shorter Catechism, 8.