The book of Genesis starts by narrating how dark, formless and void the world was. (1:2) But the chapter ends in total contrast as it states that everything was very good! (1:31)
Darkness, formlesness and voidness are not good. When God did something about it, everything became very good.
Genesis records that darkness, formlesness, and voidness were dealt with a series of “And God said” (1:3,6,9,11,14,20,24) and culminated with: “And it was so.” (1:30)
God said it and it was so!