What does it mean to be a part of the city of God?

In the sermon, the city of God is described as an everlasting city, strengthened by divine protection and grace. As believers, we belong to this spiritual city, which represents the true church comprised of those redeemed by Christ. Isaiah 26 and other passages highlight that this city is not forsaken; it is characterized by God's presence and the safety found in His salvation. Members of this city are secure, gathered from every nation, and known as His people, signifying the profound community and relationship we share in Christ, safeguarded by His eternal promises.