Is it ensure, insure, or assure?
forehead fore·head (fôr'ĭd, -hěd')
The part of the face between the eyebrows, the normal hairline, and the temples. Also called brow.
The practice common among Oriental nations of colouring the forehead or impressing on it some distinctive mark as a sign of devotion to some deity is alluded to in Rev. 13:16, 17; 14:9; 17:5; 20:4. The "jewel on thy forehead" mentioned in Ezek. 16:12 (R.V., "a ring upon thy nose") was in all probability the "nose-ring" (Isa. 3:21). In Ezek. 3:7 the word "impudent" is rightly rendered in the Revised Version "an hard forehead." (See also ver. 8, 9.)