But ye, beloved] They destroy the building, by separating the parts one from another; but do ye build it up, as the wise woman doeth, Proverbs 14:1. building up your selves] It is not enough that ye have laid a right foundation, but ye must confirm and advance your selves daily in your spirituall estate, on the foundation of faith in Christ, as a building ascends. For Christian men are not dead, but living stones, and help to build themselves, 1 Peter 2, 5. It may be understood of encreasing their own graces severally, as 2 Peter 3:18. or, of edifying one another, as v. 22, 23. Hebrews 10:25. Acts 9:31. on your most holy faith] Verse 3. Faith either of credulity, or of confidence, ought to have holinesse attending on it. praying in the holy Ghost] That is, by the holy Ghost. See on v 10. Mark 12:36. and Mark 13:11. Not putting up such faint petitions as flesh and blood suggesteth, but such fervent ones as Gods Spirit putteth into us, Romans 8:26.