1)
What did David command Uriyah?
1.
Malbim: He should go to his house. David intended that he stay in Yerushalayim, and not return to the war.
2)
Why did he tell him to wash his legs?
1.
Metzudas David: This is a euphemism for Bi'ah.
2.
Malbim: Uriyah came to David with dust on his feet, like one who came from traveling.
3)
What is "Mas'as ha'Melech"?
1.
Rashi, Targum Yonasan: It is the king's meal. Radak - this is like "va'Yisa Mas'os me'Es Panav" (Bereishis 43:34).
2.
Malbim: Mas'as implies a gift from someone esteemed to someone lowly, to elevate him. Even so, he refused to go to his house to receive this honor.
