Holier Than Thou - Biblical Contradictions

Is there anything too hard for God?

Judges 1:19, "And the LORD was with Judah; and he drave out the inhabitants of the mountain; but could not drive out the inhabitants of the valley, because they had chariots of iron." (KJV)

Jeremiah 32:27, "Behold, I am the LORD, the God of all flesh: is there any thing too hard for me?" (KJV)

According to Judges 1:19, God drove out the inhabitants of the mountain but could not drive out the inhabitants of the valley because they had chariots of iron, however, according to Jeremiah 32:27, there is nothing too hard for the God of all flesh.

"Sorrow is better than laughter: for by the sadness of the countenance the heart is made better. The heart of the wise is in the house of mourning; but the heart of fools is in the house of mirth." (Ecclesiastes 7:3-4, KJV)

"Then I commended mirth, because a man hath no better thing under the sun, than to eat, and to drink, and to be merry: for that shall abide with him of his labour the days of his life, which God giveth him under the sun." (Ecclesiastes 8:15, KJV)