אֲנִ֥י אֲנִ֛י דִּבַּ֖רְתִּי אַף־קְרָאתִ֑יו הֲבִיאֹתִ֖יו וְהִצְלִ֥יחַ דַּרְכּֽוֹ׃
I, even I, have spoken, yea, I have called him; I have brought him, and he shall make his way prosperous.
Read halakhic rulings (Jewish law) on Isaiah 48:15 from the Mishneh Torah and classical halakhic sources, free online.