Could he be a Hushai vs Ahithophel situation?
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Since you know that is over the head of 95% it would be good if you explained what you mean...including me...it saves time that way.
Both men were advisors of King David. Ahithophel sided with Absalom during Ab’s attempted coup. Hushai chose to depart with David, but David asked him to remain and appear to be on Absalom’s side. His mission was to frustrate the advice of Ahithophel by contradicting and countering it.
Hushai was instrumental in Absalom’s loss.