The concept of Masonic brotherhood most likely descends from the sixteenth-century authorized definition of a "brother" as 1 who's got taken an oath of mutual aid to another. Appropriately, Masons swear at each degree to help keep the contents of that degree key, and to assistance and safeguard their brethren https://blissdriveteam.github.io/westhillmasonry/Hardscape-Contractors.html