Though we might allow the prophets and the apostles to entertain fallacious notions about the cosmos, can we allow the same in Christ? He said His father maketh His sun to rise on the evil and on the good. Christ either knows that in reality His Father maketh the earth to move around the sun and rotate on its axis and carry the evil and the good to the light of the sun, but prefers to speak from the point of view of earth, or Christ entertained fallacious notions about the heavens.
Or is there a third option I haven't thought of?
Yup. "Sunrise" and related terms are merely the generic, nontechnical terms for the phenomenon of the nearest star becoming visible above the horizon. Its use is ubiquitous, ranging from Christ's words recorded in scripture to daily newspapers to atheists. Attaching any deeper connotation of truth or fallacy seems (to me) like overthinking things.