Galatians 1:8

You have listened to these false teachers. But the Gospel is one and unchangeable, admitting of no addition or modification. Even though I, Paul, and those who, as Timothy, Titus and Silas, are like minded with me nay, even though an Angel from heaven should preach anything as supplementary to that which I have preached, let him be accursed.

any other gospel It is impossible to translate this verse literally. The passage implies the perfectionof the Gospel which Paul had preached. To add to it was to impugn this perfection. "If any man preach to you as Gospel anything besidesthat which we have preached." Romanist writers contend for the rendering - against". But in this case -besides" is-against".

accursed lit. anathema, cut off, not from the Communion of the Church (which could not apply to an angel), but from the favour of God. It is instructive to notice that the Council of Trent pronounces anathema against those who do not regard the Apocryphal books as sacred and Canonical Scripture, or who knowingly and deliberately despise the unwritten traditionsof the Church. Conc. Trid. Sess. iv.

The word -anathema", rendered by -accursed" in the A.V. is the Septuagint equivalent of the Hebrew חֶרֶם (Deuteronomy 7:26; Joshua 6:17-18, &c.), and is used to denote a person or thing devoted to destruction, because accursed of God. The exact expression occurs in only one other passage of the N. T., 1 Corinthians 16:22, "If any man love not the Lord Jesus Christ, let him be anathema." How are we to understand these strong expressions? Surely St Paul is not imprecating a curse on every man (or angel) who should propagate false doctrine, and on every professing Christian who does not love the Lord Jesus. He would have prayed for such an one, and have bidden his converts pray that God would "bring into the way of truth all such as have erred and are deceived". His meaning is, "Let such an one be regarded by you as under wrath and curse of Almighty God." Solemn words, so understood, and full of warning. This view of their force may be illustrated by our Lord's language, "Let him beunto thee as a heathen and a publican," Matthew 18:17.