Genesis 5:30
“And Lamech lived after he begat Noah five hundred ninety and five years, and begat sons and daughters:”
KJV
Read in Genesis 5Meaning
Lamech lives another 595 years after Noah and has additional sons and daughters beyond the son singled out for the coming narrative.
Read carefully
Noah's narrative importance does not mean he was Lamech's only child; the verse explicitly states otherwise.
Reflection
The text narrows its narrative focus while still acknowledging the broader family life surrounding its central figures.