a solemn appeal whereby one person imposes on another the
obligation of speaking or acting as if under an oath (1 Sam.
14:24; Josh. 6:26; 1 Kings 22:16).

We have in the New Testament a striking example of this (Matt.
26:63; Mark 5:7), where the high priest calls upon Christ to
avow his true character. It would seem that in such a case the
person so adjured could not refuse to give an answer.

The word "adjure", i.e., cause to swear is used with reference
to the casting out of demons (Acts 19:13).