Contradiction?

[NotforSale]

And the LORD said unto Moses, How long will this people provoke me? and how long will it be ere they believe me, for all the signs which I have shewed among them? I will smite them with the pestilence, and disinherit them, and will make of thee a greater nation and mightier than they. Then shalt thou say unto them, Thus saith the LORD, Behold, I will fill all the inhabitants of this land, even the kings that sit upon David's throne, and the priests, and the prophets, and all the inhabitants of Jerusalem, with drunkenness. And I will dash them one against another, even the fathers and the sons together, saith the LORD: I will not pity, nor spare, nor have mercy, but destroy them.

Can a woman forget her sucking child, that she should not have compassion on the son of her womb? yea, they may forget, yet will I not forget thee. Great deliverance giveth he to his king; and sheweth mercy to his anointed, to David, and to his seed for evermore. For the mountains shall depart, and the hills be removed; but my kindness shall not depart from thee, neither shall the covenant of my peace be removed, saith the LORD that hath mercy on thee.