A digital art interpretation of the biblical moment in Genesis 26:35, where Isaac and Rebekah are experiencing grief. Illustrate an aged man and woman, both of Hebrew descent, visibly distraught. The setting should be ancient, with elements reminiscent of Old Testament times - perhaps an old stone house or an unadorned room. Capture their emotions of sorrow and dismay, through careful detailing of their expressions and posture. Use earthy color palette to evoke the historical era, with subdued bordeaux reds, olive greens, and rustic browns.