By faith Abel offered to God a more excellent sacrifice than Cain, by which he obtained testimony of being righteous, God bearing testimony to his gifts, and by it, having died, he yet speaks.

not as Cain was of the wicked one, and slew his brother; and on account of what slew he him? because his works were wicked, and those of his brother righteous.

Woe to them! because they have gone in the way of Cain, and given themselves up to the error of Balaam for reward, and perished in the gainsaying of Core.