hi bro the book of Isaiah was written thousands of years older than magellan
and it stated that the earth is round..
Isaiah 40:22 ""He sits enthroned above the circle of the earth
and if i'm not mistaken wasnt it science who qouted that the earth was a flat disk?

if magellan heard that from the church then i dont know what kind of theology they teach...
or that magellan qoutation was just a hoax..it could be the thought of the day but difinitely not truth of the day.
and to add a bit, this bible verse says that the earth is floating in space..
Job 26:7
He is stretching out the north over the empty place,
Hanging the earth upon nothing;
how would Job know in his time that earth is just floating in space?well yeah there's an orbit...but literally, it is floating...
It was not until some 400 years ago from our present time did we even begin to understand about gravity and how it holds the planets in place. Job is like the great great great great...grandfather in age of Sir Isaac Newton who discovered gravity