What does Exodus 6:24 mean?

After the genealogy (Exodus 6:14) arrives at Aaron (Exodus 6:23), it now records more about Korah. He was the son of Izhar, son of Kohath (Exodus 6:18). He was the father of three sons named Assir, Elkanah, and Abiasaph. Korah died in a rebellion in the wilderness (Numbers 16), though his sons did not die with him (Numbers 26:11). The Korahites later served as temple gatekeepers (1 Chronicles 9:19) and were noted in the titles of some of the Psalms (Psalm 42:1; 44—49; 84—85; 87—88).

First Chronicles 6:22–23 calls Elkanah the grandson of Korah rather than his son. A second man named Elkanah would later be the father of Samuel (1 Chronicles 6:27). The chronology in 1 Chronicles 6:22 offers more details, sharing, "The sons of Kohath: Amminadab his son, Korah his son, Assir his son, Elkanah his son, Ebiasaph his son, Assir his son." It appears Korah's "sons" means all of his descendants, ra-ther than only direct offspring. This was common in early biblical genealogies.