Buddhism talks about the Law of Cause and Effect, which spans the Three Periods (past, present, and future). Suppose in your previous lives you frequently heard the Dharma; practiced diligently; planted deep virtuous roots; and cultivated a lot of blessings. Even if you have not encountered the Dharma in this life, or were born in a place without Buddhism, due to your profound virtuous roots, you will naturally not be swayed into committing an evil action despite coming across negative conditions.