Musar for Pirkei Avot 5:19
כָּל מִי שֶׁיֵּשׁ בְּיָדוֹ שְׁלשָׁה דְבָרִים הַלָּלוּ, מִתַּלְמִידָיו שֶׁל אַבְרָהָם אָבִינוּ. וּשְׁלשָׁה דְבָרִים אֲחֵרִים, מִתַּלְמִידָיו שֶׁל בִּלְעָם הָרָשָׁע. עַיִן טוֹבָה, וְרוּחַ נְמוּכָה, וְנֶפֶשׁ שְׁפָלָה, מִתַּלְמִידָיו שֶׁל אַבְרָהָם אָבִינוּ. עַיִן רָעָה, וְרוּחַ גְּבוֹהָה, וְנֶפֶשׁ רְחָבָה, מִתַּלְמִידָיו שֶׁל בִּלְעָם הָרָשָׁע. מַה בֵּין תַּלְמִידָיו שֶׁל אַבְרָהָם אָבִינוּ לְתַלְמִידָיו שֶׁל בִּלְעָם הָרָשָׁע. תַּלְמִידָיו שֶׁל אַבְרָהָם אָבִינוּ, אוֹכְלִין בָּעוֹלָם הַזֶּה וְנוֹחֲלִין בָּעוֹלָם הַבָּא, שֶׁנֶּאֱמַר (משלי ח) לְהַנְחִיל אֹהֲבַי יֵשׁ, וְאֹצְרֹתֵיהֶם אֲמַלֵּא. אֲבָל תַּלְמִידָיו שֶׁל בִּלְעָם הָרָשָׁע יוֹרְשִׁין גֵּיהִנֹּם וְיוֹרְדִין לִבְאֵר שַׁחַת, שֶׁנֶּאֱמַר (תהלים נה) וְאַתָּה אֱלֹהִים תּוֹרִידֵם לִבְאֵר שַׁחַת, אַנְשֵׁי דָמִים וּמִרְמָה לֹא יֶחֱצוּ יְמֵיהֶם, וַאֲנִי אֶבְטַח בָּךְ:
All who possess these three attributes are of the disciples of our father Abraham; and (all who possess) three other attributes are of the disciples of the wicked Bilam: (If he possesses) a good eye and a humble spirit and a lowly soul, he is of the disciples of our father Abraham. [He learned from him and walked in his ways: "A good eye" — contenting himself with what he has and not desiring the wealth of others, as we find with Abraham, who said to the king of Sodom (Genesis 14:22): "Nothing — from a thread until a sandal latchet (shall I keep for myself, nor shall I take anything that is yours." "And a humble spirit" — exceeding humility, as we find with Abraham, viz. (Ibid. 18:27): "and I am dust and ashes"; "and a lowly soul" — watchfulness and separation from lust, as we find with Abraham, viz. (Ibid. 12:11: "Behold, I now know that you are a beautiful woman," not having been aware of her beauty because of his great modesty.] (If he possesses) an evil eye, a haughty spirit, and a "broad" soul, he is of the disciples of the wicked Bilam. [Bilam had "an evil eye," knowing that it was evil in the eyes of the L rd for him to go to Balak, yet going anyway for the sake of reward, viz. (Numbers 22:18): "If Balak gives me his house full of silver and gold, etc."; "and a haughty spirit," (saying of himself) (Ibid. 24:16): "The speech of the hearer of the words of the Almighty and the knower of the knowledge of the Most High"; "and a 'broad' soul." For if he were not exceedingly lustful, he would not have counseled to abandon the daughters of Moav to harlotry. And our sages said (Sanhedrin 105a): "Bilam lived with his donkey."] What is the difference between the disciples of our father Abraham and the disciples of the wicked Bilam? The disciples of our father Abraham eat in this world and inherit the world to come, as it is written (Proverbs 8:21): "I have much to bequeath to My lovers [in the world to come], and their stores shall I fill [in this world.]" [Abraham is called a "lover" viz. (Isaiah 41:8): "the seed of Abraham, My lover."] But the disciples of the wicked Bilam inherit Gehinnom and descend to the pit of destruction, as it is written (Psalms 55:24): "And You, O G-d, shall lower them to the pit of destruction. Men of bloodshed [(e.g., Bilam, who by his counsel killed twenty-four thousand of Israel)] and deceit shall not halve their days, but I shall trust in You."