People can hinder God's miracles!

Mark 5:36

Note on Mark 5:36

Why didn’t Jesus just raise Jairus’ daughter from the dead? Then the problem would have been solved. Why did He tell Jairus to believe? Why did He say “only believe”? It’s because Jairus’ faith was an important part of this miracle; people can believe and disbelieve at the same time (see my note at Luke 8:50).
Most people don’t have this concept. They think if they have faith, then there won’t be any unbelief. And if they have any unbelief, then there isn’t any faith. That’s not what God’s Word teaches. People can have faith and unbelief at the same time.
Jesus told His disciples in Matthew 17:20 that the reason they couldn’t cast the demon out of the boy was because of their unbelief. He didn’t say it was because of their little faith (as the New International Version renders that verse). Otherwise, His illustration that He goes on to give in that verse wouldn’t make sense. He said if their faith was as small as a mustard seed, they could cast a mountain into the sea with just their words.
A small amount of faith is sufficient to accomplish any miracle if it’s not negated, canceled, or diluted by unbelief. Instead of just trying to build faith, we need to limit the amount of unbelief in our lives. See my notes at Matthew 17:20-21.
Jesus countered Jairus’ fear and told him to only believe.

Mark 5:37

Note on Mark 5:37

It was common when people were raised from the dead for the person who raised them from the dead to sperate themselves from unbelief. Elijah did this (1 Kings 17:19-22). Elisha did this (2 Kings 4:33). Peter did this (Acts 9:40). Jesus was hindered in performing mighty works in His hometown because of the people’s unbelief (Mark 6:5-6). If He had allowed the crowd or even some of the family friends into the room, they could have hindered this miracle. See my note at Luke 8:51.

Mark 5:38

Note on Mark 5:38

The Jews thought it was a sign of great love and respect to bewail the death of a loved one. For this reason, they actually hired professional mourners who would come to their house and cry over the death of the loved one.

Mark 5:39

Note on Mark 5:39

No doubt, this girl was dead as we know it, not just asleep. But from God’s perspective, death is similar to sleep. It’s not final. We will awaken someday. We could awaken from death at the final resurrection, or it could be in just a few moments, as in this case where Jesus awoke her early. But for those who operate in God’s faith, raising a person from the dead is as easy as awakening someone from sleep.

Mark 5:40

Note on Mark 5:40

Here were God’s own creations, ridiculing Him for His stance of faith. The Lord would have been righteous to destroy them all, just as Elisha did when he was mocked (2 Kings 2:23-24). But that’s not what He came to do. He came to save us, not judge us (Luke 9:55-56).
He put all this unbelief outside because it could have hindered the performance of this miracle. See my notes at Mark 6:5-6.

Mark 5:41

Note on Mark 5:41

There was no rebuking of the devil or death. He simply commanded her to arise and she did. What a display of power!

Life For Today Study Bible Notes

Note 1 at Mark 5:41: This was an Aramaic phrase that means “maiden, I say unto thee, arise” (Vine’s Expository Dictionary). Aramaic words were used elsewhere in Scripture (Matthew 27:46; Mark 7:34, and 15:34) although reasons for their use are not given. It becomes evident from a historical perspective, however, that Aramaic was the language most commonly spoken by Jesus and large numbers of Jews.
The Aramaic language uses the same alphabet as the Jewish language but differs somewhat in pronunciation and grammar. The Assyrian language, which was spoken in Babylon, was also closely related. When the Jews returned from the Babylonian captivity, Aramaic was the language adopted by them to use in everyday affairs and business. Hebrew Scriptures were also translated into Aramaic.
Just as in modern English literature when foreign words or expressions are inserted when the author feels an English word does not adequately express what he is trying to communicate, Matthew and Mark may have felt their Aramaic words more correctly rendered their meaning than any Greek word.

Mark 5:42

Note on Mark 5:42

This was a total miracle. For the girl to come back to life was miraculous. We know she was dead for some period of time, so to come back with no brain damage was even more miraculous. Then to be able to walk and eat was even more miraculous. Whatever the sickness was that killed her, she came back without it.

Mark 5:43

Note on Mark 5:43

If people’s unbelief could have prevented this miracle, then people’s unbelief could have stolen it away. I believe the Lord told Jairus and his wife not to tell people of this miracle so that they wouldn’t speak out their unbelief and cause their daughter to relapse.
This girl’s resurrection was totally miraculous, but notice that she now needed natural food. There is always a blending of the natural and supernatural in walking with the Lord. She was raised supernaturally but sustained naturally.

Andrew Wommack's Living Commentary.