Job 39:16

She is hardened against her young ones, as though they were not hers: her labour is in vain without fear;

The ostrich is hardened toward its own young, treating them as though they did not belong to her. Her labor over them comes to nothing, yielding them no lasting benefit. This strange neglect in nature stands as one of those mysteries that finite minds cannot fully unravel. It exposes the narrow limits of human wisdom and summons trust in the face of God's works.