וָ֠אֶקַּח אֶת־אֲבִיכֶ֤ם אֶת־אַבְרָהָם֙ מֵעֵ֣בֶר הַנָּהָ֔ר וָאוֹלֵ֥ךְ אוֹת֖וֹ בְּכָל־אֶ֣רֶץ כְּנָ֑עַן וארב [וָאַרְבֶּה֙] אֶת־זַרְע֔וֹ וָֽאֶתֶּן־ל֖וֹ אֶת־יִצְחָֽק׃
Y yo tomé á vuestro padre Abraham de la otra parte del río, y trájelo por toda la tierra de Canaán, y aumenté su generación, y díle á Isaac.
Rashi on Joshua
I multiplied his descendants. The word אַרְבֶּ in the text lacks the letter ה,1The word should have been written אַרְבֶּה. [from which we infer:]2 The root of ארב would be רִיב which means to quarrel. “How many troubles and tests3Avrohom was tested a total of 10 times, the tenth being the binding of Yitchok on the altar. did I bring upon him before I gave him a descendant.”
Metzudat David on Joshua
1. With my kindness I turned his heart away from that of his father's and brother's, and I took him from within this, so he want be drawn to their false ideology.