Jude 1:9 - Wesley's Explanatory Notes

Yet Michael — It does not appear whether St. Jude learned this by any revelation or from ancient tradition. It suffices, that these things were not only true, but acknowledged as such by them to whom he wrote. The archangel — This word occurs but once more in the sacred writings, 1 Thessalonians 4:16. So that whether there be one archangel only, or more, it is not possible for us to determine. When he disputed with the devil — At what time we know not. Concerning the body of Moses — Possibly the devil would have discovered the place where it was buried, which God for wise reasons had concealed. Durst not bring even against him a railing accusation — Though so far beneath him in every respect. But simply said, (so great was his modesty!) The Lord rebuke thee — I leave thee to the Judge of all.