Matthew 12:30

“He who is not with me is against me, and he who does not gather with me scatters.”

Jesus finalises His words with a conclusion. This is so important a matter that he who is not with Him in this must be counted as against Him. Either men are for the Kingly Rule of God over their lives or they are against it. Men cannot claim to be on His side unless they are with Him and are themselves gathering men into the Kingly Rule of God. All must be involved. And if men are not gathering with Him (into the new congregation) then they are ‘scattering'. This probably has in mind the scattering of the sheep as found in Matthew 9:36. In other words not to be one with Jesus in His ministry is to outside the Kingly Rule of God, and is to become a false shepherd and to harm the sheep.

We should note that when He in contrast said ‘he that is not against you is for you', He was speaking of those who while not accompanying them were still in alignment with Him and demonstrated by their success that they were under the Kingly Rule of God (Luke 9:49).