אִם־יִתֶּן־לִ֨י בָלָ֜ק מְלֹ֣א בֵיתוֹ֮ כֶּ֣סֶף וְזָהָב֒ לֹ֣א אוּכַ֗ל לַעֲבֹר֙ אֶת־פִּ֣י יְהוָ֔ה לַעֲשׂ֥וֹת טוֹבָ֛ה א֥וֹ רָעָ֖ה מִלִּבִּ֑י אֲשֶׁר־יְדַבֵּ֥ר יְהוָ֖ה אֹת֥וֹ אֲדַבֵּֽר׃
If Balak would give me his house full of silver and gold, I cannot go beyond the word of the LORD, to do either good or bad of mine own mind; what the LORD speaketh, that will I speak?
Read halakhic rulings (Jewish law) on Numbers 24:13: and classical halakhic sources.