Tafsiran 2 Samuel 2:30: Rashi

Nineteen men and Asoel. But is not Asoel included in [the group called] "the servants of Dovid," so why is he [singled] out? [The reason is] he was worth all of them [together] and so too [a similar case], (Yehoshua 2,1), "Go see [and spy out] the land and Yericho"⁹Yericho was as strong as the entire land combined (see Rashi there). and so too [another similar case] "King Shlomo loved many foreign women and the daughter of Pharaoh."¹⁰Shlomo cherished Pharaoh’s daughter as much as he did the rest of them put together. (See Rashi ibid). (Kings I, 11, 1 ).