Mark 9 (NIV)
38"Teacher," said John, "we saw a man driving out demons in your name and we told him to stop, because he was not one of us."
39"Do not stop him," Jesus said. "No one who does a miracle in my name can in the next moment say anything bad about me, 40for whoever is not against us is for us. 41I tell you the truth, anyone who gives you a cup of water in my name because you belong to Christ will certainly not lose his reward.
Numbers 11 (NIV)
24 So Moses went out and told the people what the LORD had said. He brought together seventy of their elders and had them stand around the Tent. 25 Then the LORD came down in the cloud and spoke with him, and he took of the Spirit that was on him and put the Spirit on the seventy elders. When the Spirit rested on them, they prophesied, but they did not do so again. [b]
26 However, two men, whose names were Eldad and Medad, had remained in the camp. They were listed among the elders, but did not go out to the Tent. Yet the Spirit also rested on them, and they prophesied in the camp. 27 A young man ran and told Moses, "Eldad and Medad are prophesying in the camp."
28 Joshua son of Nun, who had been Moses' aide since youth, spoke up and said, "Moses, my lord, stop them!"
29 But Moses replied, "Are you jealous for my sake? I wish that all the LORD's people were prophets and that the LORD would put his Spirit on them!" 30 Then Moses and the elders of Israel returned to the camp.
In Mark’s gospel, John requested Jesus to stop a man from casting out demons in Jesus name just because he was not from his group but Jesus would not listen to him. In the same vein, in the book of Numbers, when Eldad and Medad who were not in the tent prophesied, Joshua requested Moses to stop them but Moses would not.
Both Moses and Jesus had to deal with insular attitudes, and with people jealous of their power.
Everyone who is born of God, even a one day old Christian, has as much right/access to the things of God and no one can claim any exclusive right. No one denomination has the monopoly of the things of God. Let God be God.
At times we can marginalise people in church according to our preconceived ideas or ideologies or theologies or methods/wild imaginations/jealousies/prejudices, just like John and Joshua did but I believe we are going to see more of God being God, dealing with us in this area, surprising us with His ways, for His ways are higher than our ways.
God is going to continually cross boundaries that we have erected ourselves with our prejudices and misconceptions. God is going to cast down strongholds of imaginations that exalteth against Him according to :
2 Corinthians 10 (King James Version)
3For though we walk in the flesh, we do not war after the flesh:
4(For the weapons of our warfare are not carnal, but mighty through God to the pulling down of strong holds;)
5Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ;
6And having in a readiness to revenge all disobedience, when your obedience is fulfilled.
Praise God. Begin to make room for God’s manifest presence to be revealed. Only believe.