For where two or three are gathered together in my name, there am I in the midst of them.Matthew 18:20 ASV
The smallness of the church or its relative insignificance in the community is not a determining factor in God’s concern for its peace and welfare.
Two or three faithful disciples are enough to claim the Father’s blessing.
There is, however, one supremely overriding condition: that they be truly gathered together in the name of Christ.
This means, by his commandment, by the authority of his will and teaching, in obedience to his specific commandments. and as his word directs.
It is, to be sure, a mystery how Christ can be present everywhere, and this mystery is set forth in Revelation 1:12,13, in which the Son of God is seen among the seven golden candlesticks (his churches, or congregations).
Christ’s presence is not restricted to some vague “up there,” but he is in his body, the church.