How did God create heaven and earth?

God spoke the world into existence:-


And so on. It makes sense really: Genesis says that God created everything, John says the Word was God and created everything, while Paul in Colossians says Jesus Christ created everything:-

Joh 1:1-4, 11-14 MKJV In the beginning was the Word, and the Word was with God, and the Word was God. (2) He was in the beginning with God. (3) All things came into being through Him, and without Him not even one thing came into being that has come into being. (4) In Him was life, and the life was the light of men. .... (11) He came to His own, and His own received Him not. (12) But as many as received Him, He gave to them authority to become the children of God, to those who believe on His name, (13) who were born, not of bloods, nor of the will of the flesh, nor of the will of man, but were born of God. (14) And the Word became flesh, and tabernacled among us. And we beheld His glory, the glory as of the only begotten of the Father, full of grace and of truth.

Col 1:13-19 KJV ....of his dear Son: (14) In whom we have redemption through his blood, even the forgiveness of sins: (15) Who is the image of the invisible God, the firstborn of every creature: (16) For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him: (17) And he is before all things, and by him all things consist. (18) And he is the head of the body, the church: who is the beginning, the firstborn from the dead; that in all things he might have the preeminence. (19) For it pleased the Father that in Him [ie Jesus] should all fulness dwell;

This means everything was created by the Word with a word.