1 Timothy 4:16

"Take heed," he says, "unto thyself, and unto the doctrine: continue in them." That is, take heed to thyself, and teach others also. "For in so doing thou shalt both save thyself and them that hear thee." It is well said, "Thou shalt save thyself." For he that is "nourished up in the words of sound doctrine," first receives the benefit of it himself. From admonishing others, he is touched with compunction himself. For these things are not said to Timothy only, but to all. And if such advice is addressed to him, who raised the dead, what shall be said to us? Christ also shows the duty of teachers, when He says, "The kingdom of heaven is like unto an householder, who bringeth forth out of his treasure things new and old." And the blessed Paul gives the same advice, that "we through patience and comfort of the Scriptures might have hope." This he practiced above all men, being brought up in the law of his fathers, at the feet of Gamaliel, whence he would afterwards naturally apply to reading: for he who exhorted others would himself first follow the advice he gave. Hence we find him continually appealing to the testimony of the prophets, and searching into their writings. Paul then applies to reading, for it is no slight advantage that is to be reaped from the Scriptures. But we are indolent, and we hear with carelessness and indifference. What punishment do we not deserve!