The time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears; and they shall turn away their ears from the truth, and shall be turned unto fables. But watch thou in all things, endure afflictions, do the work of an evangelist, make full proof of thy ministry. 2 Timothy 4:3-5. LHU 116.1
“Sound doctrine” is Bible truth—truth that will promote piety and devotion, confirming God's people in the faith. Sound doctrine means much to the receiver; and it means much, too, to the teacher, the minister of righteousness; for wherever the gospel is preached, every laborer, whatever his line of service, is either true or untrue to his responsibility as the Lord's messenger. LHU 116.2
Paul wrote again, “It is a faithful saying: For if we be dead with him, we shall also live with him: if we suffer, we shall also reign with him: if we deny him, he also will deny us: if we believe not, yet he abideth faithful: he cannot deny himself. Of these things put them in remembrance, charging them before the Lord that they strive not about words to no profit, but to the subverting of the hearers” (2 Timothy 2:11-14). LHU 116.3
Some who in Paul's day listened to the truth raised questions of no vital importance, presenting the ideas and opinions of men, and seeking to divert the mind of the teacher from the great truths of the gospel, to the discussions of nonessential theories and the settlement of unimportant disputes. Paul knew that the laborer for God must be wise enough to see the design of the enemy, and refuse to be misled or diverted. The conversion of souls must be the burden of his work; he must preach the Word of God, but avoid controversy.... LHU 116.4
The ministers of Christ today are in the same danger. Satan is constantly at work to divert the mind into wrong channels, so that the truth may lose its force upon the heart.... LHU 116.5
Men of ability have devoted a lifetime of study and prayer to the searching of the Scriptures, and yet there are many portions of the Bible that have not been fully explored. Some passages of Scripture will never be perfectly comprehended until in the future life Christ shall explain them. There are mysteries to be unraveled, statements that human minds cannot harmonize. And the enemy will seek to arouse argument upon these points, which might better remain undiscussed. LHU 116.6
A devoted, spiritual worker will avoid bringing up minor theoretical differences, and will devote his energies to the proclamation of the great testing truths to be given to the world. He will point the people to the work of redemption, the commandments of God, the near coming of Christ; and it will be found that in these subjects there is food enough for thought (Gospel Workers, 311-313). LHU 116.7