I once read an article that explained why geese fly in V formation. It seems that as each bird in the formation flaps its wings, it creates uplift for the bird behind. As a flock, that uplift extends their distance capability much farther than if each bird flew alone.
Something else that fascinates me is that when one goose gets sick or is shot, two other geese pull out of formation and follow it down to help and protect it. They stay by the wounded bird until it dies or is able to rejoin the flock. Only then do they resume their journey.
Geese are faithful because God created them to be faithful. The same God who instilled that quality of faithfulness in geese, created us to be faithful. And it’s our privilege to live out that faithfulness for God.