Envy and Faith

Jewish law makes a strange distinction regarding the prohibition of envy: Envy of someone else’s physical, material and intellectual gifts and successes is prohibited, while envy of another’s spiritual achievements are permitted and encouraged. What is the rationale for that distinction and why does it mirror the prohibition of arrogance? We also learn that of the fine pattern strung through the Ten Commandments, why some always wear ties when praying and several interesting Heavenly proclamations made before a child is even born.