Tetragrammaton depicts God
Usage in art
Since the 16th century, artists have been using the tetragrammaton as a symbol for God, or for divine illumination. Protestant artists avoided to allegorize God in human form, but rather wrote the Hebrew name of God. This was done in book illustrations since 1530, then on coins and medals as well. Since the 17th century, both Protestant and Catholic artists have used the tetragrammaton in church decoration, on top of altars, or in center of frescos, often in rays of light or in a triangle.
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