Charles Ellicott Commentary 2 Chronicles 18:15

"And the king said to him, How many times shall I adjure thee that thou speak unto me nothing but the truth in the name of Jehovah?" — 2 Chronicles 18:15 (ASV)

And the king said. — 1 Kings 22:16, word for word.

I adjure thee. — Compare the words of the high priest to Christ (Matthew 26:63).