One's greatness has to be estimated by one's ability to tolerate provoking situations
Dealing with negativity in a positive way is called tolerance.
A lot of forgiveness, tolerance, respect, etc. is required in Kali Yuga to breed actual love.
To learn to tolerate is one of the most important responsibilities of those living in the math.
To train a new man is like training a wild animal to be a pet. Just like the tiger is trained in the circus and later on they are dancing to the tune of the master. So the point being stressed is training. A preacher should be traines to be always tolerant.