"Create a serene and soft pastel-colored illustration depicting key events from Genesis 25. The image should include Abraham with his new wife Keturah and their children, the death and burial of Abraham by Isaac and Ishmael, the birth of Esau and Jacob to Isaac and Rebekah, and Esau selling his birthright to Jacob for a bowl of stew. Blend these scenes harmoniously into a single image with very soft and soothing pastel tones, creating a calm and reverent atmosphere. Ensure the characters are dressed in traditional biblical attire, with appropriate backgrounds such as tents, fields, and a burial cave, without any text or labels."