{Our tutor unto Christ} (paidag(9367)os hum(936e) eis Christon).
See  1Co 4:15  for the only other N.T. example of this old and
common word for the slave employed in Greek and Roman families of
the better class in charge of the boy from about six to sixteen.
The paedagogue watched his behaviour at home and attended him
when he went away from home as to school. Christ is our
Schoolmaster and the law as paedagogue kept watch over us till we
came to Christ. {That we might be justified by faith} (hina ek
piste(9373) dikai(9374)h(936d)en). This is the ultimate purpose of the law
as paedagogue. {Now that faith is come} (elthous(8873) t(8873)
piste(9373)). Genitive absolute, "the faith (the time of the faith
spoken of in verse  23 ) having come." {Under a tutor} (hupo
paidag(9367)on). The pedagogue is dismissed. We are in the school of
the Master.