Generate a digital artwork depicting a scene from the Biblical verse Genesis 6:18. The scene should include a man of Middle-Eastern descent, this man is about to step onto a large wooden ark. Alongside him are his sons who look similarly Middle-Eastern, each with their own distinct features. Next to the sons, are their spouses, women of diverse ethnic backgrounds - one Caucasian, one Hispanic, another of South Asian descent - all showing a mix of apprehension and hope. The colors should be bold and intense, with a clear emphasis on the size of the ark as a symbol of salvation.