Sirach 37:19

There is one that is wise and teacheth many, and yet is unprofitable to himself.

There is one that is wise and teacheth many, and yet is unprofitable to himself.

There is one who is clever and the instructor of many, and yet is unprofitable to his own soul.

Some man wil be wise in wordes, and is hated, yea, he is destitute of all foode,