The representation of figures gathering on each side of the fountain are drawn from biblical, pagan and contemporary ecclesiastical sources. Some are crowded around the fountain in what Pächt describes as two "processions of figures have crowded to a halt". To the left are representatives of figures from Judaism and prophets who have foretold the coming of Christ; to the right representatives from the Church. The figures directly to the left of the fountain represent witnesses from the Old Testament; dressed in pink robes, kneeling, reading aloud from open copies of the Bible, facing the mid-ground with backs turned to the viewer.