Justus Jonas, the Elder, or simply Justus Jonas, was a German Lutheran theologian and reformer. He was a Jurist, Professor and Hymn writer. He is best known for his translations of the writings of Martin Luther and Philipp Melanchthon. He accompanied Martin Luther in his final moments.

Martin Luther was a German priest, theologian, author, hymnwriter, professor, and Augustinian friar. Luther was the seminal figure of the Protestant Reformation, and his theological beliefs form the basis of Lutheranism. He is regarded as one of the most influential figures in Western and Christian history.