What is the meaning of "b'Ever ha'Yarden Shachen"?
Rashi: They dwelled there, and did not come to fight.
What is the charge against Gil'ad? Machir was in Gil'ad, and they fought (verse 14)!
Radak #1: The charge is against [descendants of] Ya'ir ben Menasheh, who were in Gil'ad, and did not come to fight.
Radak #2: This is said in astonishment. Did you [Reuven] not come to fight because you are in Ever ha'Yarden? Is not also Gil'ad there? They came!
Radak #3: Gil'ad dwells in Ever ha'Yarden [and they came. Also you, Reuven, should have come!]
Malbim: This is not a charge against Gil'ad. It is why Reuven did not come. They felt no danger, for 'Gil'ad is next to me and separates me from the enemy and guards my land.'
What is the meaning of "Yagur Aniyos"?
Rashi: They rented boats [to flee].
Radak, based on Targum Yonasan: They crossed the Yarden and sent their property on boats (Lev Yitzchak - ferries) [to Ever ha'Yarden].
Malbim: Dan engaged in business with boats, and did not come to help.
What is the meaning of "Al Mifratzav"?
Rashi: [Asher stayed to guard] the breaches of his land.
Mahari Kara: Asher's cities are open, for the sea is its wall. They felt safe, so they did not come to fight.
Radak: They did not come to fight, lest they leave their cities open.
Targum Yonasan: [They dwelled in the] destroyed cities [of the Kena'ani, and rebuilt them].
Malbim: Dan did not come; he did not feel endangered, for Asher dwells next to him; they will guard Dan from the enemy.