1)
Was there a special Chesed in taking Yisrael out?
1.
Radak (13): It was Chesed that Yisrael not see war - "v'Lo Nacham Elokim Derech Eretz Pelishtim" (Shemos 13:17).
2.
Seforno: All left. Not one stayed due to old age or weakness - "v'Ein b'Shvatav Koshel" (105:37).
