Acts 1:4
On one occasion, while eating with them, he gave them this command: Do not leave Jerusalem, but wait for the gift my Father promised — waiting is not passivity but obedience; the gift is the Holy Spirit promised by the Father through the Son. Jerusalem is the epicenter of God's redemptive history (temple, Davidic covenant, prophetic tradition) and will be the launching point for the gospel's movement to all nations. The command establishes that Spirit-empowerment precedes witness.