'Sucking' in the Bible

And the sucking child shall play on the hole of the adder, and the weaned child shall put forth its hand to the viper's den.

Can a woman forget her sucking child, that she should not have compassion on the son of her womb? Even these forget, but I will not forget thee.

The tongue of the sucking child cleaveth to the roof of his mouth for thirst; the young children ask bread, no man breaketh it unto them.