This paper examines Jesus's teaching on the "kingdom of God" at the Last Supper in Luke 22:14-38, suggesting that the pericope forms the outline of Luke's ecclesiology and foreshadows the outline of the church in Acts. The main element of Luke's ecclesiology is that "the church" indicates the disciples who, through perseverance in Jesus' teachings, will inherit the kingdom of God that comes with Jesus. The paper argues that, in Luke, the authority of the church is rooted in Jesus's conferring of the "kingdom of God" on his disciples who hold to his teachings, that the institution of the Eucharist presents the Luke's vision of the "kingdom of God" in its economical and eschatological dimensions, and that the "kingdom of God" has certain subversive characteristics.