Can we explain the 'Whys' of God?

In this episode, Dr. Betters answers the question, "Thank you for your videos. They have been very helpful and comforting to watch in my suffering after my Dad’s death due to medical malpractice. I live in Colombia South America. My question is, in one of your videos you mention that the Lord will reveal to us why that terrible event happened. In some other occasions He won’t. In your case did the Lord reveal it to you? Some people say everything is not God’s will or filtered by Him, it is our free will. How do you explain the sovereignty of God in cases of suicide. What do you think? Thank you."