(Jesus said) For wherever two or three are gathered (drawn together as My followers) in (into) My name, there I AM in the midst of them.
(Matthew 18:20 AMP)

The world promotes quantity but the kingdom of God is about quality. Two people united as one is better then 20 people gathered together just having fun. When the motive of the meeting is Jesus, He comes in the midst of the meeting. Jesus is not just invited to our meeting, He is the meeting!