But what is the fury of those dumb beasts compared with the fury of execration which bursts from the parched lips and aching throats of the damned in hell when they behold in their companions in misery those who aided and abetted them in sin, those whose words sowed the first seeds of evil thinking and evil living in their minds, those whose immodest suggestions led them on to sin, those whose eyes tempted and allured them from the path of virtue.
There are no more uses of "abet" in the book.
Show samples from other sources
The man who could not be discourteous to a ground-squirrel had sat in the courthouse abetting the cause of grubby-minded little men.
Harper Lee -- Go Set a Watchman
Not telling her is tantamount to aiding and abetting the enemy.