"Then said Martha unto Jesus, Lord, if thou hadst been here, my brother had not died." John 11:21
Blaming God is nothing new... it started back in the Garden of Eden. "And the man said, The woman whom thou gavest to be with me, she gave me of the tree, and I did eat." (Genesis 3:12) When things go wrong, or don't go according to our plans, or something bad happens, God seems to get the blame for it. Adam blamed God, Martha blamed God, Mary blamed God, many people all around the world blame God. They blame Him because He allowed something to happen, or didn't allow something to happen, or He didn't stop something from happening. They blame Him because He didn't work their problem out the way they wanted Him to or because He didn't make a way when they thought He should have, etc... the list is endless.
Blaming God is a two-fold mistake: 1) It's incorrect. When you blame God, you are misplacing the blame. God is never to blame for anything. 2) When you blame God, you are pointing a finger at your only true source of help. Job never would have made it through his time of suffering had he blamed God and turned his back on Him because God was the only One who could have gotten him through it. God was the only one who could bring him comfort, strength and healing. Mary and Martha blamed God/Jesus- the only One who could help them. He was the only one who could give life and hope into their situation.
Bad things happen and things don't always happen to our liking. There is usually a place to place blame when they do, but it's not on God. He is your source. He is your strength. He is your deliverer. He is your comfort. He is the fountain from which you can drink, find rest and receive comfort when bad things happen.
Have a great day. Don't blame God when things are bad. Don't turn your back on Him. Don't cut Him off. When you do, you are cutting off your own source of help.