1)
Where would David have gone, if not that the angel's sword scared him?
1.
'Rashi', Gra (28): He would have gone to offer Korbanos in Giv'on.
2.
Ba'al ha'Turim: He would have prayed [to end] the Dever. It says "Lidrosh Elokim" in three other places ? Shemos 18:15, Shmuel I, 9:9 (Sha'ul sought his donkeys) and Divrei ha'Yamim II, 26:5 (Uziyah prayed to defeat his enemies in war). This teaches that they would seek Hashem for all their needs!
