1)
When did Mo'av hear and stand by the border?
1.
Malbim: They heard before this 1 . When the subject precedes the verb, the verses need not be in order.
1
Rashi says that the verses are not in order when the simple past tense is used, and not future with the prefix Vov. Refer to Bereishis 4:1:1:1.
2)
What is "mi'Kol Choger Chagorah"?
1.
Radak citing Targum Yonasan: Everyone who bears a sword.