Psalm 135 What pleases Him?

Psalm 135 has a verse in there that can strike deep. Verse 6 says "The Lord does whatever pleases him, in the heavens and on the earth, in the seas and all their depths." Then it goes on to talk about the rain and lightning; wind coming from the storehouses; he struck down the firstborn of Egypt; the firstborn of men and animals. He struck down many nations and killed mighty kings. Wow--but the verse above says that "The Lord does whatever pleases him." Does killing the firstborn please him? I think of the thousands that are killed by Tsunami's and hurricanes...but he "let's the wind out from his storehouses." It is hard to wrap our little finite minds around death and destruction...to think that the Lord is doing this because it will please Him. To think that He is in charge and is causing all of this pain and sorrow for a reason. That is where we have to lay down our minds, our wills, our desires--and throw up our hands in complete surrender. Lord, whatever it is--I need to choose to surrender to you. I know that your word says that you do work together ALL things for your good. When I don't understand...Let me remember that you do whatever pleases you. We know that you are GOOD and that We are NOT you--thank you for putting us in our place...time and time again. Help for us to have faith when our faith is weak. Help for us to trust you. Amen.