Scripture is God-breathed and profitable for teaching, for reproof, for correction, and for instruction in righteousness, that the man of God may be complete, thoroughly equipped for every good work.
Context / meaning
2 Timothy 3 [6.] For some of these are people who creep into houses, and take captive gullible women loaded down with sins, led away by various lusts, always learning, and never able to come to the knowledge of the truth. Even as Jannes and Jambres opposed Moses, so do these also oppose the truth; men corrupted in mind, who concerning the faith, are rejected. But they will proceed no further. For their folly will be evident to all men, as theirs also came to be.
2 Timothy 3 [10.] But you did follow my teaching, conduct, purpose, faith, patience, love, steadfastness, persecutions, and sufferings: those things that happened to me at Antioch, Iconium, and Lystra. I endured those persecutions. The Lord delivered me out of them all. Yes, and all who desire to live godly in Christ Jesus will suffer persecution. But evil men and impostors will grow worse and worse, deceiving and being deceived. But you remain in the things which you have learned and have been assured of, knowing from whom you have learned them.
2 Timothy 3 [15.] From infancy, you have known the holy Scriptures which are able to make you wise for salvation through faith, which is in Christ Jesus. Every Scripture is God-breathed and[a] profitable for teaching, for reproof, for correction, and for instruction in righteousness, that the man of God may be complete, thoroughly equipped for every good work.
2 Timothy 4 [1.] I command you therefore before God and the Lord Jesus Christ, who will judge the living and the dead at his appearing and his Kingdom: preach the word; be urgent in season and out of season; reprove, rebuke, and exhort, with all patience and teaching. For the time will come when they will not listen to the sound doctrine, but, having itching ears, will heap up for themselves teachers after their own lusts; and will turn away their ears from the truth, and turn aside to fables. But you be sober in all things, suffer hardship, do the work of an evangelist, and fulfill your ministry.