Our sages and rabbis, who have stood for us firmly in the past and still do in the present, are as connected to each other by their very beings as links are in a chain, leading to our Teacher, Moses, may he rest in peace, who received the Torah from the Almighty. Every rabbi, leader and rabbinic court that stands firmly for the People of Israel is like a link in the chain…
And it is a known fact that when a person shakes the last link of a chain - even if it be several hundred meters long and reach the top of a mountain thousands of meters high, and shaken from way below on the ground - the first link moves as well.
This is what the chain of transmission - received by our forefathers and passed on from one person to the next, going back to Moses, may he rest in peace - is like. Every word of learning expressed by the sages of any generation, even the least of them, is an expression of our Teacher, Moses, and the Almighty, and is as though the Shechina is speaking from the mouth of that sage himself.