Answer: The child of God (man of God) should study and learn the Scriptures so that we may be thoroughly equipped for every good work, (verse 17).
MORE INFORMATION AND/OR OTHER SCRIPTURE REFERENCES:
2 Corinthians 9:8: "And God is able to make all grace abound to you, so that in all things at all times, having all that you need, you will abound in every good work."
Ephesians 2:10: "For we are God's workmanship, created in Christ Jesus to do good works, which God prepared in advance for us to do."
2 Timothy 2:21: "If a man cleanses himself from the latter, he will be an instrument for noble purposes, made holy, useful to the Master and prepared to do any good work."