Matthew 5:35
Or by the earth, for it is his footstool, or by Jerusalem, for it is the city of the great King. The created order that people tried to use to construct non-binding oaths is systematically reclaimed as God's: earth is his footstool (Isaiah 66:1), Jerusalem is the city of the great King (Psalm 48:2). The taxonomy of oaths that the tradition had developed to create flexibility is dismantled by the comprehensive sovereignty of the God who owns everything.