2 Timothy 2:2; 2 Timothy 2:21; 2 Timothy 3:2; 2 Timothy 3:9; 2 Timothy 4:3

2 And the things that thou hast heard of me among many witnesses, the same commit thou to faithful men, who shall be able to teach others also.
21 If a man therefore purge himself from these, he shall be a vessel unto honour, sanctified , and meet for the master's use, and prepared unto every good work.
2 For men shall be lovers of their own selves, covetous, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy,
9 But they shall proceed no further : for their folly shall be manifest unto all men, as theirs also was .
3 For 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;