Preaching has fallen upon bad times since so little regard for the Biblical requirements for ministers have been largely ignored. Al Martin writes:
Paul says in I Thessalonians 1, ‘Knowing, brethren beloved, your election of God, for our gospel came not unto you in word only, but also in power, and in the Holy Ghost, and in much assurance; as ye know what manner of men we were among you for your sakes’. He states that there was a direct relationship between the gospel coming ‘in power, and in the Holy Ghost, and in much assurance’ and the kind of men who preached it. You will find that same thought developed in chapter two of the same letter where Paul says, in verse 10, ‘Ye are witnesses, and God also, how holily and justly and unblameably we behaved ourselves among you that believe.’ Then he says in verse 13, ‘For this cause also thank we God without ceasing, because when ye received the word of God which ye heard of us, ye received it not as the word of men, but as it is in truth, the word of God, which effectually works also in you that believe.’ There is a vital relationship between these two things. He says, on the one hand, ‘You know how we conducted ourselves’, and on the other hand, ‘we know how you received the word.’ These two things are not to be isolated. Paul and his companions stood as living embodiments of the power of the Word of God, so that when they spoke that Word it came with authority to their hearers. Notice that the apostle does not shrink to use a testimony as to the manner of his living as a witness to the validity of his preaching ministry.
In Titus two, there is some detailed instruction as to what Titus should preach and teach. Paul commands him in verse 7, ‘In all things shewing thyself a pattern of good works.’ In other words, as ministers of God we are not only to proclaim right things by precept, but we are to embody these right things in a right example. Then, of course, there is that classic passage, I Timothy 4:16. ‘Take heed to thyself and to thy teaching; continue in these things. For in doing this thou shalt both save thyself, and them that hear thee.’ In essence, Paul is saying: ‘Timothy, carelessness in your own personal life will result in some measure of shoddiness in the discharge of your responsibility to the souls over whom the Holy Ghost has made you an overseer. Failure to take heed to yourself will in some measure result in failure to see the saving purpose of God wrought in the hearts of those to whom you minister.’ I have made these remarks as one who believes without reservation Paul’s statements of truth concerning the immutability of the purpose of God and the certainty of the salvation of all His elect. Yet we must not bleed out of this passage in I Timothy its obvious implication, that Timothy would not be that instrument of God that he could be unless he took heed to himself and then to his teaching. (“What’s Wrong with Preaching?”)