14 But as for you, zcontinue in what you have learned and have firmly believed, knowing from whom1 you learned it 15 and how afrom childhood you have been acquainted with bthe sacred writings, cwhich are able to make you wise for salvation through faith in Christ Jesus. 16 dAll Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, 17 that ethe man of God2 may be complete, fequipped gfor every good work.
4 hI charge you in the presence of God and of Christ Jesus, iwho is to judge the living and the dead, and by jhis appearing and his kingdom: 2 preach the word; be ready in season and out of season; kreprove, rebuke, and lexhort, with complete patience and teaching. 3 mFor the time is coming when people will not endure nsound1 teaching, but having itching ears they will accumulate for themselves teachers to suit their own passions, 4 and owill turn away from listening to the truth and pwander off into myths. 5 As for you, qalways be sober-minded, rendure suffering, do the work of san evangelist, tfulfill your ministry.
The Greek for whom is plural
That is, a messenger of God (the phrase echoes a common Old Testament expression)