Only God can create galaxies with his omniscient and omnipotent mind. He has this power within himself and it is unborrowed. However, the promise does exist that we "can do all things through him [Christ] who strengthens [us.]" Phil. 4:13 [italics mine] Notwithstanding that the actual context refers to being content with abundance or lack of it, this text is often cited as a stand alone text referring to being able to surmount obstacles and being able to live a victorious Christian life, as well.
Additionally, did Jesus not promise that "if you have faith the size of a mustard seed you can say to this mountain be lifted up and transported to the heart of the seas and it will be done." Gospel of Matthew. Some say that this mountain is symbolic of obstacles and such. Well that may be. However, nothing is impossible for God. Why could not a literal mountain be transported into the heart of the seas? Stranger things have happened in our modern world. Did not a seemingly small Enola Gay aircraft deliver an even smaller device which destroyed two major Japanese cities with tragic results? How seemingly impossible would that have appeared to people living even 100 years before such a thing occurred to say nothing of those living 1000 years ago.
Several times a day Phil. 4:13 comes to mind, but it has come to lose some of its power by frequent repetition until I focused on each word and realized the amazing significance of each word. All worlds were created by Christ's power. We are promised that that same Christ, who is very God, can empower us to do all things through his limitless power.
Is there any reason why we at some point in our future experience will be prevented by this boundless power to create galaxies of our own invention? The universe is infinite. It is suggested by some theorists that we are a part of a multiverse which is also infinite. Each child of God can theoretically be enabled to create galaxies through the creative power of God.
In this mortal life the only ability we are granted is to create these future galaxies through the power of the sanctified imagination. One curious idea has suggested itself as I started this post. What if we already have this God-given power at our disposal and don't realize it? As we peer through telescopes that our God-given intelligence has enabled us to design, might we not be creating by the power of thought the very galaxies we are seeing in ever-increasing profusion and variety? God shares everything with us: life, mind, free will. Why put limits on what he is capable of sharing with us, his children?
The flip side of this wonderful God-given ability, is unfortunately at our disposal as well: the power to uncreate and to destroy. How else to account for the disasters and gross imperfections that come into play with ever-increasing frequency? Man and his free will are presently undoing the perfection that God blessed us with in creating our perfect reality. When planes fall from the sky we need not blame this catastrophe on an almost invincible demon, or even put the blame on God himself. These disasters happen because somewhere on Earth there are individuals who will these things into existence. Humanity is its own worst enemy.
Humankind can, through the enabling power of God, also be its own best friend and an agent for good. Why stop at just good? Why not redesign what is apparently broken? Everything is possible for him who believes. Start believing and through the wondrous power of God, start creating your first galaxy today.