Well Rembrandt built up colors and textures in his paintings through the use of layering (also sometimes used multi-layers) and also some of the paintings were thick, he used a strategy called "IMPASTO"
The answer is Spiritual. Jan van Eyck was critical toward the northern Renaissance as well as to the whole Renaissance. He is credited with the creation of the oil-coating system, which supplanted the prior egg-gum based paint strategy. The Marriage of Giovanni Arnolfini, normally called the Arnolfini Wedding, is van Eyck's most celebrated work.
