21 My son, keep good sense, and do not let wise purpose go from your eyes.
Bible verses about "competence" | BBE
Proverbs 3:21
Proverbs 22:6
6 If a child is trained up in the right way, even when he is old he will not be turned away from it.
2 Timothy 3:17
17 So that the man of God may be complete, trained and made ready for every good work.
2 Corinthians 3:4-5
2 Timothy 2:15
15 Let it be your care to get the approval of God, as a workman who has no cause for shame, giving the true word in the right way.