The Church is the body of Christ. Not figuratively. Literally.
The way you’ll treat the Church tomorrow is the way you treat Jesus.
If Christ is unified to his people, then what one does to his people is what one is doing to Christ. How one treats his people is how one is treating Christ. This is the clear implication of Jesus’ own words in Matthew 25:40.
Jesus’ words to Paul have far wider-reaching ramifications than how Jesus views the persecution of his people. It has clear implications for how the Lord’s people treat one another. It similarly has implications for how the Lord’s people treat the Lord’s stuff.
If we cannot be bothered to get out of bed to get to church on Sunday morning, we are not just failing to bother spending time with God’s people but we are spurning Christ himself. When we have no interest in serving and caring for the Lord’s people, we are failing to care for the Lord. When we drop the ball on stuff in church and put upon others, we are spurning the Lord and saying there are other things that take precedence over him.
If Jesus’ words to Saul tell us that those who persecute the church are persecuting Christ, it also tells us that how we treat the church is how we treat Christ. If we never go to church, if we constantly go away for the weekend, if we never serve, if we find anything else to do, these are not just holding the church in low esteem, it is treating Christ lightly and a direct reflection on our views of him.
By contrast, a high view of the church is a high view of Christ. If the church becomes a high priority, Christ is a high priority. Serving the people of the church is a measure of our love for Christ. Serving in the ministries of the church is a measure of our love for Christ. Turning up at weekly worship and engaging with the Lord’s people is a measure of our love for Christ.