Ecclesiastes 7:10
"Say not thou, What is the cause that the former days were better than these? for thou dost not enquire wisely concerning this."
Cross References (ranked by relevance)
Judges 6:13
And Gideon said unto him, Oh my Lord, if the LORD be with us, why then is all this befallen us? and where be all his miracles which our fathers told us of, saying, Did not the LORD bring us up from Egypt? but now the LORD hath forsaken us, and delivered us into the hands of the Midianites.
Isaiah 50:1
Thus saith the LORD, Where is the bill of your mother’s divorcement, whom I have put away? or which of my creditors is it to whom I have sold you? Behold, for your iniquities have ye sold yourselves, and for your transgressions is your mother put away.