He is Lord over everything in our life

In Mark 5:21-43,  Jesus heals a woman who had been sick with a disease for many years and a synagogue's daughter.  This shows that he is Lord over all things in our life.  Jesus shows these people he is Lord over sickness and family struggles in our lives.  In all these circumstances, he calls these certain people to have faith.  They had faith in him and he performed a mighty work in their lives.
At the beginning of the story, the synagogue ruler saw Jesus as he crossed over to the shore and he steadfastly asked Jesus to come because his daughter was near death.  Then a large crowd started following him and pressed on him.  A woman came up to Jesus who had a blood sickness for twelve years came up on him.  She pressed on his cloak, hoping he would heal her.   Then Jesus realized power from him had gone forth and asked who touched him.  
Jesus looked around and saw the woman who had touched him. She told him everything that happened to her.   He told the woman "daughter your faith has saved you, go in peace."  The woman trusted Jesus in faith despite her sickness.   She surrendered to trust and he worked in her life.
The officials were cautioning the synagogue ruler to bother Jesus anymore but Jesus would not have it.  In verse 36, Jesus calls the officials and ruler to believe who he is.  The synagogue ruler had faith and believed Jesus would heal his daughter.  In verse 39, "Jesus says the child has not died, but is asleep."  In verse 41 and 42, Jesus mutters some Hebrew words and heals the synagogue ruler's daughter.
God calls us to believe and trust him in all circumstances in our life.  As believers, we are to surrender all sickness and family struggles to Jesus.  Jesus knows what we need, he will go to the Father with struggles.