of the gospel in Gal. 1:11–12, 15–16). The promise Jesus gives in verse 18 is to build a durable community which he calls my church (cf. 18:17; 1 Cor. 1:2; Acts 9:31). The Greek word for church is ekklēsia, the same word used for the assembly of Israel in the LXX (cf. Deut. 31:30; Judg. 20:2; 1 Kings 8:14). What Jesus promises, then, is to reconstruct the people of God, to fashion a messianic community of faith with its own foundation and destiny. And Peter is somehow related to this building