Objection: God Creates Both the Day of Prosperity and the Day of Adversity (Ecclesiastes 7:14)

Ecclesiastes 7:14:
In the day of prosperity be joyful, but in the day of adversity consider: God also hath set the one over against the other, to the end that man should find nothing after him.

Consider the context of the book of Ecclesiastes before using this verse as a proof-text that God gave you lung cancer.  The entire book’s theme is the vanity of life apart from God.  Time and chance happen to everyone; good and bad things happen to everyone.  God allows things to happen without intervening when someone is not walking in covenant with Him.  God has no obligation to send only days of prosperity to those who do not walk with Him.  God leaves you on your own in life if that’s what you choose.

This does not invalidate Deuteronomy 28, which promises prosperity to those who serve God and poverty to those who don’t serve God.  God did not promise days of prosperity and days of adversity to good and bad alike in that chapter.

Under the Old Covenant, God sent days of prosperity to His obedient people and He sent days of adversity to His enemies and even to His people when they were in mass disobedience.  It appears that Solomon recognized that people who read his book would live to see both kinds of days.

Besides, this verse isn’t even talking about sickness.  It could be used as an objection to prosperity teaching (and be refuted), but it is definitely off the subject of healing.