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Use "of the essence" in a sentence
"Our language offers an extraordinarily telling formula of the essence of these changes: the fighter must “pull himself together” “sich zusammennehmen”."
"Speed, as everybody knew, was of the essence and so the launching of attacks by individual companies tended to be at their own discretion, acknowledged by battalion commanders and vetted by Oblensky."
"As a rescue leader with the Albuquerque Mountain Rescue Council and one of my many mentors, Steve was acutely aware that time was of the essence in the developing situation."