"Teacher" is "God," who endowed man with intelligence, varied abilities and talents, teaching wisdom in the knowledge of His Will. 

"Teacher" is a symbol of Jesus Christ, who, by His teaching of God's Will and of His Commandments, teaches the nations their true understanding and fulfillment.

"Teacher" is the symbol of a man who truly understands the Will of God revealed to him. Such spiritual teachers are all the Patriarchs, Prophets, Christ, Apostles, and all the Righteous who proclaim God's Commandments to the nations.

Negative Meaning.

"Teacher" is a symbol of a person who spreads his false sense of meaning, the Spirit of the Holy Scriptures of the Prophets, the Teachings of Jesus Christ and His Apostles.