Render the biblical verse Matthew 3:11 as a scenic and symbolic watercolor painting. In the scene, a humble figure clad in garb akin to that worn in biblical times, stands in a river, preparing to baptise the figures approaching him. He carries an air of serenity and solemnity. The river flows quietly, surrounded by a scenic backdrop of peaceful rolling hills. The entire scene is awashed in the soft, diffuse hues indicative of a watercolor masterpiece.