Illustrate a respectful and devotional scene inspired by the verse Luke 17:2 from the Bible. Depict a symbolic representation where a figure burdened with the weight of a large millstone tied around his neck is being solemnly submerged in a vast sea. Make sure to capture the profoundness of the religious context without depicting any offense to little ones. The style should reflect watercolor technique, evoking soft, fluid blending of colors, capturing the depth and intensity of the motif.