Both must therefore test themselves: the one, if he is qualified to speak and leave behind him written records; the other, if he is in a right state to hear and read: as also some in the dispensation of the Eucharist, according to custom, enjoin that each one of the people individually should take his part. One’s own conscience is best for choosing accurately or shunning. And its firm foundation is a right life, with suitable instruction. But the imitation of those who have already been tested, and who have led correct lives, is most excellent for the understanding and practice of the commandments. “So that whosoever shall eat the bread and drink the cup of the Lord unworthily, shall be guilty of the body and blood of the Lord. But let a man examine himself, and so let him eat of the bread and drink of the cup.”[813] It therefore follows, that every one of those who undertake to promote the good of their neighbours, ought to consider whether he has betaken himself to teaching rashly and out of rivalry to any; if his communication of the word is out of vainglory; if the only reward he reaps is the salvation of those who hear, and if he speaks not in order to win favour: if so, he who speaks by writings escapes the reproach of mercenary motives. “For neither at any time used we flattering words, as ye know,” says the apostle, “nor a cloak of covetousness. God is witness. Nor of men sought we glory, neither of you, nor yet of others, when we might have been burdensome as the apostles of Christ. But we were gentle among you, even as a nurse cherisheth her children.”[814] In the same way, therefore, those who take part in the divine words, ought to guard against betaking themselves to this, as they would to the buildings of cities, to examine them out of curiosity; that they do not come to the task for the sake of receiving worldly things, having ascertained that they who are consecrated to Christ are given to communicate the necessaries of life. But let such be dismissed as hypocrites. But if any one wishes not to seem, but to be righteous, to him it belongs to know the things which are best. If, then, “the harvest is plenteous, but the labourers few,” it is incumbent on us “to pray” that there may be as great abundance of labourers as possible.[815]