Sacred furnishings in rough stone, to celebrate the Lord. “Build there an altar of stone to the Lord your God, an altar of stones, which iron did not work. Build the altar of sacred furnishings Lord, your God, of rough stones (…) “. So we read in the Bible, in the book of Deuteronomy. It is ordered to build an altar in stone in honor of God, and moreover in rough stone (because the “iron”, that is the chisels, should not have worked. That is, the stone would not have been modified but used as it was found in nature ).
It is not a rarity: once unworked stone was deliberately used for the altars and the choice was full of symbolic value. Raw and natural stone was considered a direct emanation of God, resistant to the passage of time, never born and therefore not destined to end. Very strong and above all eternal. Furthermore, compared to natural stone, man does not notice its transformations or its slow metamorphosis: he always considers it the same, immutable.