'Accursed' in the Bible

For I could wish that myself were accursed from Christ for my brethren, my kinsmen according to the flesh:

Wherefore I give you to understand, that no man speaking by the Spirit of God calleth Jesus accursed: and that no man can say that Jesus is the Lord, but by the Holy Ghost.

But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.

As we said before, so say I now again, If any man preach any other gospel unto you than that ye have received, let him be accursed.