How does Matthew 28:19 relate to the overall message of the Gospel?

My friend and I were having a deep conversation about the core teachings of the Bible. We were discussing the overall message of the Gospel and trying to understand how different verses contribute to it. Matthew 28:19 came up, and we found it particularly intriguing. Now, bear in mind, we're not theologians or anything, just two curious individuals seeking to explore our faith better. We delved into the verse, which mentions Jesus instructing his disciples to go and make disciples of all nations, baptizing them in the name of the Father, Son, and Holy Spirit. We wondered how this specific verse fits into the broader context of the Gospel's main message. We started contemplating the significance of spreading the word, embracing different cultures, and finding unity in faith. It triggered a chain of thoughts, leading us to examine how this verse acts as a call to action for followers of Christ. We were fascinated and eager to hear what others think about this connection.