207 The flames of love of the Sacred Heart of Jesus also expand through the Church’s missionary outreach, which proclaims the message of God’s love revealed in Christ. Saint Vincent de Paul put this nicely when he invited his disciples to pray to the Lord for “this spirit, this heart that causes us to go everywhere, this heart of the Son of God, the heart of our Lord, that disposes us to go as he went… he sends us, like [the apostles], to bring fire everywhere”.
Source: Dilexit Nos (Vatican.va)