What sin did she ask David to bear?
Malbim: She spoke critically of him.
What is "Bayis Ne'eman"?
Rashi: It is kingship over Yisrael. Therefore, you should not do improperly, to cast scorn on your kingship.
Radak citing Targum Yonasan: It is lasting kingship. She said so via Nevu'ah. She was one of seven female prophets according to Chazal (Megilah 14a). Or, we can say that it was known that David was anointed.
What are "Milchamos Hashem"?
Radak citing Targum Yonasan: They are the wars of Hashem's nation.
What is the meaning of "Simatzei"?
Radak: The verse used the future tense, but it means past, as if it said Nimtza'ah. "Mi'Yamecha" proves so.
Malbim: It is future. Evil should not be found in you ever, for then people will say that you fought according to chance, like a person who loves war, to spill blood when he has the chance.
Why did she mention these periods in his lifetime?
Malbim: Until now you fought wars against Yisrael's, i.e. Hashem's, enemies. It is improper to mix among your wars, a war for your honor, which is not a war of Mitzvah or obligation, only Reshus or Aveirah.
