'Backslider' in the Bible

From his ways is the backslider in heart filled, And a good man -- from his fruits.

In that day doth one take up for you a simile, And he hath wailed a wailing of woe, He hath said, We have been utterly spoiled, The portion of my people He doth change, How doth He move toward me! To the backslider our fields He apportioneth.