It’s striking that three of the four gospels have opening sentences referring to “the beginning” (Mk. 1:1, Lk. 1:2, Jn. 1:1). Counting Matthew’s “book of the genealogy” (Mt. 1:1) as an explicit referent to Genesis (Gen. 5:1, cf. Gen. 6:9, 10:1, 11:10, etc.), all four gospels begin with creation, insisting or implying to varying degrees that the gospel is as big of a deal as the creation of the world.
The gospel is the re-creation of the world, not a nice “religious” thought.