1. Synonyms for Abstaining include avoiding, desisting, eschewing, forbearing, refraining, renouncing, shunning, declining, forgoing and keeping

2. Antonyms for Biding include nonresident, visiting, ceasing, closing, concluding, desisting, dying, discontinuing, ending and expiring

3. Desisting from sin and from works of self-justification are just part of the answer.