Rembrandt was already deeply involved in his attachment to Rubens - at once adopting him as his model and fighting to have the differences noticed. His [painting] 'Descent from the Cross', also painted in 1631 for the Stadholder, was directly taken from the engraving after Rubens's greatest masterpiece in Antwerp Cathedral', while at the same time being a calculated Protestant response to the immense diapason of the [catholic] Flemish master's altar-piece.