Three points are revealed in Mat 18:20. Christian assemblies are appointed. It was appointed that on a certain day that a body of believers would get together to honor God. Not everyone could meet tonight but God knows whom they are if they could actually make it. If a famous person was appointed to be at the church house and folks knew about it, we would have to find other places for them all to park because we wouldn't be able to house them all. Some will get discouragement because of the low attendance but God dealt with the low attendance. God will bless in just two people as He will in a million in attendance. Our church times are an actual scheduled appointment that we have with God. The second point is the how. Whenever at least two gather in HIS name, no other purpose but His, He would be there. A hundred people could declare a time to gather together but if they all left Jesus at home, God will not be there. The third point is if the other two are upheld, God WILL be in the midst of them. It only takes two, in agreement to meet God, for God to come and visit with them. Hebrews 10:25