The words “caustic” and “encaustic” are related because they both refer to burning. But one is negative, and the other, positive. Caustic burns to destroy (physically or metaphorically). Encaustic burns to create. Encaustic painting heats up wax so that it can be poured and smoothed layer by layer, creating beautiful, multidimensional, luminous pictures. It is a slow art, with each stratum and color cooling before the next is applied. So what is encaustic preaching? Encaustic preaching as a metaphor
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