Jeremiah 29:12
The promise that the exiles will call upon God, pray to Him, and be heard establishes that prayer remains efficacious even in diaspora and that God's ear is open to the exiles despite their distance from the Temple. This restoration of covenantal communication channels through prayer contradicts any sense that God has abandoned the exiles and provides a spiritual practice through which they can maintain relationship with God. The promise of being heard validates prayer as a legitimate means of covenant relationship beyond Temple sacrifice and ritual.