As Jeremiah is imprisoned for prophesying of Judah's captivity, Judah is being taken captive. God instructs him to buy a piece of land and promises restoration of the land, to have mercy on them and bring forth the Root of David, The Messiah, The King. Paul is writing from the praetorian prison urging the entire Philippian church in love to stand as one body faithful to the gospel of Christ. To live is Christ, to die is gain.