This is a horrible mess of misinformation. For starters, a spheroid is an ellipsoid.The earth's shape is a spheroid
Although the earth's shape is technically an ellipsoid, its major and minor axes do not vary greatly. In fact, its shape is so close to a sphere that it is often called a spheroid rather than an ellipsoid.
"To simplify the model, various spheroids or ellipsoids have been devised. These terms are used interchangeably. For the remainder of this article, the term spheroid will be used."
"A spheroid, or ellipsoid of revolution is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters. If the ellipse is rotated about its major axis, the result is a prolate (elongated) spheroid, like an American football or rugby ball. If the ellipse is rotated about its minor axis, the result is an oblate (flattened) spheroid, like a lentil. If the generating ellipse is a circle, the result is a sphere."
Next, as you can see from the above, as the lengths of major and minor axes of the ellipse of revolution defining the resulting spheroid converge toward equal lengths, and the foci approach one another and overlap, the ellipse degenerates into a circle. The resulting three dimensional spheroid generated becomes more spherical, the limit of which is a perfect sphere. Now, let's look at your comment again:
"In fact, its shape is so close to a sphere that it is often called a spheroid rather than an ellipsoid."
Even an extremely elongated, cigar-shaped ellipse generates a spheroid, which as noted, is a synonym for ellipsoid.
You Christians should read a book besides your bibles.