Knock See also Ask knock, and it shall be opened unto you, 2Â Ne. 9:42 (3Â Ne. 14:7; 27:29; Matt. 7:7). if ye cannot understand, it is because ye ask not, neither do ye knock, 2Â Ne. 32:4. knock and it shall be opened, D&C 4:7 (6:5; 11:5; 12:5; 14:5; 49:26; 66:9; 75:27; 88:63).