Gregory the Great

For, since it is written, "That one should first be proved, and so minister" (1 Tim. iii. 10), much more ought he first to be proved who is taken as an intercessor for the people, lest bad priests should become the cause of the people's ruin. There can therefore be no excuse, no defence against this, since it is clearly known to all how solicitous about diligent attention to this matter is the holy and excellent teacher, who forbids that a novice should accede to sacred orders (1 Tim. iii.). But, as then one was called a novice who had been newly planted in the conversation of the holy faith, so one is now to be held to be a novice who, having been suddenly planted in the habit of religion, creeps on to canvass for sacred dignities. Orders, then, should be risen to in an orderly way: for he courts a fall who seeks to rise to the topmost heights of a place by steep ascents, disregarding the steps that lead to it. And, seeing that the same apostle teaches his disciple, among other directions with regard to sacred orders, that hands are to be laid hastily on no man (1 Tim. v.), what can be more hasty or what more headlong than to begin at the top, and that a man should commence by being a bishop before he has been a minister?