"Whatsoever God doeth, it shall be for ever: nothing can be put to it, nor any thing taken from it: and God doeth it, that men should fear before Him" (Ecclesiastes 3:14).
God is both omniscient and omnipotent. He has the wisdom to know what is best to do, and the power to do it. Thus, He makes no mistakes, and never needs to go back and revise or redirect something He started. What He does is forever!
This fundamental principle has many profound implications. It anticipates the basic scientific law of conservation, the most important and universal law of science. The basic physical entities which comprise and organize all natural processes energy, mass, momentum, electric charge—are all "conserved" throughout nature, being neither created nor destroyed in the present natural order of things.
The same applies to the basic kinds of plants and animals--evolutionists to the contrary notwithstanding. "After its kind" is the universal law of reproduction, and there is not the slightest evidence in the real data of biology that this law has ever been violated, or even could be violated.
And it also applies to the created cosmos, as a whole. Many Scriptures (e.g., Psalm 148:1-6) assure us that the sun, moon, and stars, as well as the renewed earth, will continue to function through all the endless ages to come. Nothing can defeat God's primeval purposes in creating them.
Most of all, it applies to our great salvation: "I give unto them eternal life; and they shall never perish" (John 10:28). "The mercy of the LORD is from everlasting to everlasting upon them that fear Him" (Psalm 103:17). "His dominion is an everlasting dominion which shall not pass away" (Daniel 7:14). "My salvation shall be for ever" (Isaiah 51:6). "The word of our God shall stand for ever" (Isaiah 40:8).
This remarkable principle of universal conservation is given "that men should fear before Him." HMM