Why is kairos important for the delivery of this Brutus’ speech be successful

I feel as though this was a Kairos moment due to the fact that he gave out this very inspirational and inspiring speech when everyone was kinda at their lowest and lost hope. So This is a Kairos moment Because he said his speech at the right Exact time,  the time people needed to hear it and it Inspired as well as encouraged people to get up and fight. the Kairos moment is so important and I feel as though it played a big role in inspiring everyone to get up and continue fighting.  without Kairos/him saying  his speech at the correct time  I feel as though everyone would've just gave up.

Explanation:

It is in vain, sir, to extenuate the matter. Gentlemen may cry, Peace, Peace²but there is no peace. The war has actually begun! The next gale that sweeps from the north will bring to our ears the clash of resounding arms! Our brethren are already in the field! Why stand we here idle? What is it that gentlemen wish? What would they have? Is life so dear, or peace so sweet, as to be purchased at the price of chains and slavery? Forbid it, Almighty God! I know not what course others may take; but as for me, give me liberty or give me death!"

"Kairos is an Ancient Greek word meaning the right, critical, or opportune moment"

the following key ideas correctly express the key sentence.

restate key idea: most people can learn to swim in ten short lessons.

restate key idea: the majority of water-accident victims require mouth-to-mouth breathing.

restate key idea: an empty, tightly closed gallon jug will support a tired swimmer.  

restate key idea: first aid is to prevent accidents as well as assist in rescue.

explanation: the key idea needs to have the same topic as the key sentence (drowning and safety).