Only depending on generating some benevolence is not enough;if we do not generate the mind for Bodhi, we can never totally eliminate the evil karmas of all previous lives.Why?

• 光靠我们自己发点善心还不行，如果我们不发菩提心，无论如何都不可能完全彻底地解除累生累劫的业障，为什么呢？