Deuteronomy 22:6

6If, as you are walking along the way, you find a bird’s nest, in a tree or on the ground, and the mother is nurturing the young or the eggs, you shall not take her with her young.
22:6 you shall not take, etc.: This was to show them to exercise a certain mercy even to irrational creatures; and by that means to train them up to a horror of cruelty; and to the exercise of humanity and mutual charity one to another.(Challoner)
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