Complex sentence: In subsequent verses the Hebrew refers to the days using ordinal numbers, e.g.,'second day','third day', and so forth, but with the sixth and seventh days the Hebrew includes the definite article ("the").
Split into simpler sentences: In subsequent verses the Hebrew reads as ordinal numbers, e.g.,'second day','third day', and so forth. Only with respect to the sixth and seventh days does the Hebrew include the definite article ("the").