Paul calls Timothy his "son." Paul was very involved in discipling Timothy in his faith. Therefore, he called him his "spiritual" son. (See: [[rc://en/tw/dict/bible/kt/disciple]], [[rc://en/tw/dict/bible/kt/faith]], [[rc://en/tw/dict/bible/kt/spirit]] and [[rc://en/ta/man/translate/figs-metaphor]])
Genealogies are lists that record a person's ancestors or descendants. Jews used genealogies to choose the right man to become king. They did this because only a son of a king could become king. Most important people had records of their genealogies.