"And they feared exceedingly, and said one to another, 'What manner of man is this, that even the wind and the sea obey him?'" Mark 4:41
What I am trying to say is that the problems we face, the storms that threaten, the demons that rage, the fiery furnace trials, the pit of despair, the den of roaring lion's, the oppression of the enemy, the loss of possessions, the break in relationships, the fear of drowning does not change nor diminish who He is. He is still God. He is still Ruler over all the universe. He is still the Deliverer, the Healer, the Savior.
He hadn't changed in the boat. Their revelation of who He was in a greater dimension had changed. They saw Him in a "new light". But He was the same Jesus. He was already the ruler over nature when He got in the boat-- not when He rebuked it.
Our times of trials, problems and testing don't change Him. They change our perspective of Him. They change our understanding of who He is. We see Him in a greater way than we saw Him in other situations. I can remember being sick once and praying for the Lord to touch me--- He had on many occasions. This time He spoke to my heart and told me that I already knew He was my Healer, this time He wanted to show me something different about Himself-- He wanted to give me another revelation of His greatness. (And He did.)
So remember, your circumstances don't change Him. He is still Who He has always been. But they change the way you see Him and give you a deeper, clearer revelation of Who this Glorious, Amazing, Wonderful, Almighty God is.
Have a great day. The Lord is the same all-powerful God during the trials as He was before the trials. They don't change Him. They change our understanding of Who He is and broadens it.