So then, the law was our guardian until Christ came, in order that we might be justified by faith.
24. Wherefore the law was our schoolmaster This is the second comparison, which still more clearly expresses Paul’s design. A schoolmaster is not appointed for the whole life, but only for childhood, as the etymology of the Greek word παιδαγωγός implies.
The law was given to convince men of sin and to restrain them from running into excess. It was never meant to overthrow the promise, but to serve it by directing sinners to Christ, the only way sin is expiated and pardoned.
AI summary
Commenting on Galatians 3:19-29
Wherefore the law was our schoolmaster unto Christ,.... So the words should be read, as they are by the Syriac and Ethiopic versions; for the words "to bring us" are a supplement of our translators, and have nothing to answer to them in the original; and the sense of the passage is, that the law performed this office of a schoolmaster until the coming of...