Abel signifies charity or love, in Genesis 4:2. (Divine Providence 242, Arcana Coelestia 325, and Arcana Coelestia 341).

Abel signifies celestial love, which is loving the Lord. Similarly, he represents good conjoined with truth. (Apocalypse Explained 817).

In Genesis 4:2-9, Abel's offering signifies worship from charity as acceptable by the Lord, while worship from faith alone is not. (Arcana Coelestia 325, 341, Apocalypse Explained 817, Arcana Coelestia 326)