A possible print source may be Egbert van Panderen's engraving of the Sacrifice of Isaac, circa 1600, after Pieter de Jode. The angel has moved from the right to the sunburst, but the drapery and boots of Abraham and the pyre are very similar. See Mary M. Brooks, English Embroideries, Ashmolean Handbooks, Oxford, cat. no. 6., for a discussion of this print source.