This is a copy from another post I found on the internet...
A person who has never sinned...lacks the ability to teach sinners the way of Teshuvah
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The baal teshuvah (Master of return), is one who has digressed; one who has ventured beyond the realm of the permissible and has absorbed the irredeemable elements of creation into his life. His digression was a wholly negative thing; but having occurred, it holds a unique potential: the potential for teshuvah, "return."
Teshuvah is fueled by the utter dejection experienced by one who wakes to the realization that he has destroyed all that is beautiful and sacred in his life; by the pain of one who has cut himself off from his source of life and well-being; by the alienation felt by one who finds himself without cause or reason to live. Teshuvah is man's amazing ability to translate these feeling of worthlessness, alienation and pain into the drive for rediscovery and renewal.
The baal teshuvah is a person lost in the desert whose thirst, amplified a thousandfold by the barrenness and aridity of his surroundings, drives him to seek water with an intensity that could never have been called forth by the most proficient welldigger; a person whose very abandonment of G-d drives him to seek Him with a passion the most saintly tzaddik cannot know. A soul who, having stretched the cord that binds it to its source to excruciating tautness, rebounds with a force that exceeds anything experienced by those who never leave the Divine orbit.
In this way, the baal teshuvah accomplishes what the most perfect tzaddik cannot (Jewish Thought)
There is more but this is the jist of the article.
A person who has never sinned...lacks the ability to teach sinners the way of Teshuvah
.......................
The baal teshuvah (Master of return), is one who has digressed; one who has ventured beyond the realm of the permissible and has absorbed the irredeemable elements of creation into his life. His digression was a wholly negative thing; but having occurred, it holds a unique potential: the potential for teshuvah, "return."
Teshuvah is fueled by the utter dejection experienced by one who wakes to the realization that he has destroyed all that is beautiful and sacred in his life; by the pain of one who has cut himself off from his source of life and well-being; by the alienation felt by one who finds himself without cause or reason to live. Teshuvah is man's amazing ability to translate these feeling of worthlessness, alienation and pain into the drive for rediscovery and renewal.
The baal teshuvah is a person lost in the desert whose thirst, amplified a thousandfold by the barrenness and aridity of his surroundings, drives him to seek water with an intensity that could never have been called forth by the most proficient welldigger; a person whose very abandonment of G-d drives him to seek Him with a passion the most saintly tzaddik cannot know. A soul who, having stretched the cord that binds it to its source to excruciating tautness, rebounds with a force that exceeds anything experienced by those who never leave the Divine orbit.
In this way, the baal teshuvah accomplishes what the most perfect tzaddik cannot (Jewish Thought)
There is more but this is the jist of the article.