This does not mean that they were the sons of prophets, but rather, that they were a group of prophets. See how you translated this phrase in [2 Kings 2:3](../02/03.md). Alternate translation: "from among the prophets there" (See: [[rc://en/ta/man/translate/figs-idiom]])
Gehazi is asking Naaman to give these things to him so that he can take them and give them to the prophets. Alternate translation: "Please give me a talent of sliver and two changes of clothes to give to them" (See: [[rc://en/ta/man/translate/figs-explicit]])