By faith Abel offered a sacrifice more acceptable to God than Cain did, for by it he was approved as an upright man, since God approved him for the offering he made; and by it he still continues to speak, though dead.

We must not be like Cain who belonged to the evil one and butchered his brother. And why did he butcher him? Because his own actions were wicked and his brother's upright.

Alas for them, because they have trod the road that Cain did; for gain they have rushed into Balaam's error and have perished in rebellion like that of Korah!