Jude 1:3

Verse Jude 1:3. When I gave all diligence] This phrase, πασαν σπουδηνποιουμενος, is a Grecism for being exceedingly intent upon a subject; taking it up seriously with determination to bring it to good effect. The meaning of the apostle seems to be this: "Beloved brethren, when I saw it necessary to write to you concerning the common salvation, my mind being deeply affected with the dangers to which the Church is exposed from the false teachers that are gone out into the world, I found it extremely necessary to write and exhort you to hold fast the truth which you had received, and strenuously to contend for that only faith which, by our Lord and his apostles, has been delivered to the Christians."

Some think that St. Jude intimates that he had at first purposed to write to the Church at large, on the nature and design of the Gospel; but seeing the dangers to which the Churches were exposed, because of the false teachers, he changed his mind, and wrote pointedly against those false doctrines, exhorting them strenuously to contend for the faith.

The common salvation] The Christian religion, and the salvation which it brings. This is called common because it equally belongs to Jews and Gentiles; it is the saving grace of God which has appeared to every man, and equally offers to every human being that redemption which is provided for the whole world.