How do we know the Great Commission was given before Pentecost?

The Great Commission, found in Matthew 28:16-20, clearly shows that Jesus instructed the apostles to go and make disciples of all nations before the Holy Spirit descended at Pentecost. This commission emphasizes the authority given to the apostles as leaders within the church, which existed prior to Pentecost. By discerning the timeline of events in the Gospels, it becomes evident that the commission was a directive to an already established church, rather than a command initiating the church's existence.