The world is not eternal but was created by God

“He moreover teaches by the word “created,” that what before did not exist was now made; for he has not used the term יצר, (yatsar,) which signifies to frame or forms but ברא, (bara,) which signifies to create. Therefore his meaning is, that the world was made out of nothing. … Let this, then be maintained in the first place, that the world is not eternal but was created by God.”

Calvin’s commentary on Genesis 1:1