וַיֹּ֤אמֶר הַמֶּ֙לֶךְ֙ אֶל־יוֹאָ֔ב הִנֵּה־נָ֥א עָשִׂ֖יתִי אֶת־הַדָּבָ֣ר הַזֶּ֑ה וְלֵ֛ךְ הָשֵׁ֥ב אֶת־הַנַּ֖עַר אֶת־אַבְשָׁלֽוֹם׃
And the king said unto Joab: ‘Behold now, I have granted this request; go therefore, bring the young man Absalom back.’
Rashi on II Samuel
Yoav sent to Tekuah. Our Rabbis said Because olive oil is found there, therefore wisdom is found there.1Menochos 85a.
Rashi on II Samuel
In truth, I am a widowed woman.אֲבָל means "In truth."
Rashi on II Samuel
My master the king, the sin is upon me. This is euphemistic for [the sake of] his honour in other words, "You are rebutting me [by] saying, 'I will command [someone] concerning you,' I will [then] go on my way and you will not command [anyone] concerning me, and my son will get murdered. Upon who is this sin?"