Holier Than Thou - Biblical Contradictions

Will the earth last forever or not?

Psalm 78:69, "He built his sanctuary like the heights, like the earth that he established forever."

Psalm 102:25-26, "In the beginning you laid the foundations of the earth, and the heavens are the work of your hands. They will perish, but you remain; they will all wear out like a garment. Like clothing you will change them and they will be discarded."

According to Psalm 78, God established the earth forever, however, according to Psalm 102, the earth will perish.

"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)