It consists not of political oppression or poverty or hard work. It is far deeper than that. It is felt by the rich as well as the poor for it is something from which wealth and idleness can never deliver us. The burden borne by mankind is a heavy and a crushing thing. The word Jesus used means a load carried or toil borne to the point of exhaustion.
Rest is simply release from that burden.
It is not something we do, it is what comes to us when we cease to do. His own meekness, that is the rest. Let us examine our burden. It is altogether an interior one. It attacks the heart and the mind and reaches the body only from within.