The Bible stated in a 5000 year old epistle by Enoch that the Earth and all of the planets were spheres.
He also accurately described their motion, millenia before telescopes were supposedly invented.
A wooden navigation device, found within the great pyramid, now commonly known as a celtic cross, proved rather well that the ancients had a firm grasp of spherical trig.
Yes. The knowledge gets lost and rediscovered time and time again. We’ve had many dark ages and renaissances.
Oh, and Enoch? Barley mentioned in the canonical books of the Bible. Ten references mostly genealogy and ages, and he had a city named after him, and he walked with God and was no more.
The epistle Enoch wrote didn’t make the cut, it’s quite literally non-Biblical.