15 With the seventh panel there is a digression from the pattern. Instead of simply saying that Enoch lived, the text observes that he “walked with God.” The rare expression “walked with” (the Hitpael form of the verb הָלָךְ, halakh, “to walk” collocated with the preposition אֶת, ’et, “with”) is used in 1 Sam 25:15 to describe how David’s men maintained a cordial and cooperative relationship with Nabal’s men as they worked and lived side by side in the fields. In Gen 5:22 the phrase suggests that Enoch and God “got along.” This may imply that Enoch lived in close fellowship with God, leading a life of devotion and piety. An early Jewish tradition, preserved in 1:9 and alluded to in Jude 14, says that Enoch preached about the coming judgment. See F. S. Parnham, “Walking with God,” 46 (1974): 117–18.
16 Heb “and Enoch walked with God, after he became the father of Methuselah, [for] 300 years.”
17 The word “other” is not in the Hebrew text, but is supplied for stylistic reasons.

In other versions

Enoch walked with God after he fathered Methuselah 300 years and had other sons and daughters.

After he became the father of Methuselah, Enoch walked faithfully with God 300 years and had other sons and daughters.

And after he fathered Methuselah, Enoch walked with God 300 years and fathered other sons and daughters.

After the birth of Methuselah, Enoch lived in close fellowship with God for another 300 years, and he had other sons and daughters.

And Enoch walked with God after he fathered Methuselah three hundred years, and fathered sons and daughters.

And Enoch walked with God after he begat Methuselah three hundred years, and begat sons and daughters:

Public Domain