How do we know the kingdom of God is established?

We can be assured of the establishment of the kingdom of God through Jesus’ death, which serves as a substitute for His elect, and His resurrection, which overcame death. As stated in scripture, the kingdom was effectively inaugurated when Christ ascended to the Father after completing the redemptive work necessary for salvation. The resultant pouring out of the Holy Spirit at Pentecost signifies the kingdom's reality in the lives of believers today. This ongoing work demonstrates His active reign and the realization of the promised new covenant, where God dwells among His people, imprinting His laws on their hearts. Thus, the kingdom is both a present reality and a future hope, grounded in Christ's accomplishments.