Youtube is an amazing service. It gives people the ability to see and experience things that happen in other places/culture that are different than our own. For example, there are videos of sheep from different flocks grazing on the same patch of land. Then one of the shepherds whistles and calls out and his sheep break from the pack and go back home with him.
Is it no wonder that Christ used this same imagery for His teaching on the salvation of His elect people? Pastor John Samuel Barnett ties this image of salvation as the very first need in order for anyone to follow the will of God.
https://youtu.be/pgNnbWy0zis
(From 2016JAN24 – SWS-10 – Following Christ – The Path Jesus Left For Our Safety)