2 Timothy 3:14–17

14 But as for you, continue in what you have learned and have firmly believed, knowing from whom¹ you learned it 15 and how from childhood you have been acquainted with the sacred writings, which are able to make you wise for salvation through faith in Christ Jesus. 16 All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, 17 that the man of God² may be complete, equipped for every good work.

Footnotes

[1] 3:14 The Greek for whom is plural
[2] 3:17 That is, a messenger of God (the phrase echoes a common Old Testament expression)

(ESV)