Are the four profitable areas in 2 Tim 3:16 covering doctrine and practice?

Also see four.

2Ti 3:16 All scripture [is] given by inspiration of God, and [is] profitable for doctrine, for reproof, for correction, for instruction in righteousness:

Doctrine - speaks of Christ and the cross

Voice of the prophet

1Co 2:2 For I determined not to know any thing among you, save Jesus Christ, and him crucified.

reproof - confronts your sin

Voice of the judge

Jas 1:23 For if any be a hearer of the word, and not a doer, he is like unto a man beholding his natural face in a glass:

Jas 1:24 For he beholdeth himself, and goeth his way, and straightway forgetteth what manner of man he was.

correction (making things right)

Voice of the priest

Christ as THE priest corrects the broken relationship between man and God.

Lu 1:17 And he shall go before him in the spirit and power of Elias, to turn the hearts of the fathers to the children, and the disobedient to the wisdom of the just; to make ready a people prepared for the Lord.

instruction in righteousness - rule over the flesh (earthly)

Voice of the king

Eph 4:22 That ye put off concerning the former conversation the old man, which is corrupt according to the deceitful lusts;