"And God said, 'Let there be light,' and there was light." Genesis 1:3
I count ten times in the first chapter of Genesis that God said something and then something happened. That is the way He made light, Heaven, Earth, grass, trees, fruit, the sun, the moon and stars, living creatures of every kind to fill the air, the land and the sea. And finally, He created man in His own image. Just by saying, and it was so.
Psalm 33:6-9 says, "By the word of the LORD were the heavens made; and all the host of them by the breath of his mouth. He gathers the waters of the sea together as a heap: He lays up the depth in storehouses. Let all the earth fear the LORD: let all the inhabitants of the world stand in awe of Him. For He spoke, and it was done; He commanded, and it stood fast."
God's power is amazing. I have yet to look in the refrigerator and say, "Let there be dinner" and have dinner appear! Yet, God made the whole universe by His spoken Word.
In John 1:1-3, we find out that Jesus is that Word:
In the beginning was the Word, and the Word was with God, and the Word was God. The same was in the beginning with God. All things were made by Him; and without Him was not any thing made that was made.
Selah (think about that).