2 Timothy 2:15; 2 Timothy 3:16-17

2 Timothy 2:15

15 Do all you can to present yourself to God as someone worthy of his approval, as a worker with no need to be ashamed, because he deals straightforwardly with the Word of the Truth.

2 Timothy 3:16-17

16 All Scripture is God-breathed and is valuable for teaching the truth, convicting of sin, correcting faults and training in right living;

17 thus anyone who belongs to God may be fully equipped for every good work.