"As Jesus was getting into the boat, the man who had been demon-possessed begged to go with him. Jesus did not let him, but said, 'Go home to your family and tell them how much the Lord has done for you, and how he has had mercy on you.' So the man went away and began to tell in the Decapolis how much Jesus had done for him. And all the people were amazed."
Here, we see the effects of being saved. First, we see that the man did not want to be left behind as he wanted to go and be near Jesus. It is the same with us today in that, when we truly come to Christ, there will be a desire to go and walk with him.
Next, we see that Jesus told him to go and tell his family and others about what had been done for him. That is what we call a testimony and the man went and did so out of gratitude for what Jesus had done for him. He willing obeyed what Jesus told him to do.
Finally, we see that God was glorified and those that heard about what He had done were amazed. There are many, today, that want to take what God is doing and use it for their own glory but that is not the purpose of the miracle or telling others about it.
"When Jesus had again crossed over by boat to the other side of the lake, a large crowd gathered around him while he was by the lake. Then one of the synagogue rulers, named Jairus, came there. Seeing Jesus, he fell at his feet, and pleaded earnestly with him, 'My little daughter is dying. Please come and put your hands on her so that she will be healed and live.'" NIV translation
We must remember that the religious leaders had opposed Jesus but, now, here comes one of them to see Jesus.
Once again, the people were focused on the physical healing as Jairus wanted Jesus to keep her from dying.
"So Jesus went with him. A large crowd followed and pressed around him." NIV translation
In this, Jesus demonstrates love for your enemy as the religious leaders opposed Him but He still went with the man to help his daughter.
"And a woman was there who had been subject to bleeding for twelve years. She had suffered a great deal under the care of many doctors and had spent all she had, yet instead of getting better she grew worse." NIV translation
In this crowd was a woman who was suffering from a physical problem. She had been suffering for twelve years and we are reminded that the number twelve is associated with divine authority throughout the Bible. The doctors couldn't help so she came to Jesus out of desperation.