ABRAHAM VS. BALAAM
Whosoever possesses these three qualities belongs to the disciples of Abraham our father: a generous eye, a humble spirit, and a meek soul. But he who possesses the three opposite qualities--an evil eye, a proud spirit, and a haughty soul--is of the disciples of Balaam the wicked.
How do the disciples of Abraham differ from the disciples of Balaam? The disciples of Abraham enjoy this world and inherit the world to come, as it is written (Proverbs 8:21) "Endowing with wealth those who love me, and filling their treasuries." The disciples of Balaam inherit Gehenna and go down to the pit of destruction, as it is written (Psalm 55:23) "But you, O God, will cast them down into the lowest pit; the bloodthirsty and treacherous shall not live out half their days. But I will trust in you."
(Source: Ethics of the Fathers, 5:22 Mishna/Talmud)