וַיֹּ֙אמֶר֙ יְחִזְקִיָּ֔הוּ נָקֵ֣ל לַצֵּ֔ל לִנְט֖וֹת עֶ֣שֶׂר מַעֲל֑וֹת לֹ֣א כִ֔י יָשׁ֥וּב הַצֵּ֛ל אֲחֹרַנִּ֖ית עֶ֥שֶׂר מַעֲלֽוֹת׃
At sumagot si Hezekias: “Madali lang para sa anino ang umusad nang sampung baitang. Hindi, kundi bumalik nawa ang anino nang sampung baitang paatras.”
Rabbeinu Bahya
Seeing that the continued existence of the terrestrial universe depends on the functioning of the orbits of the sun, this miracle was as great as the acts of creation described in Genesis. Even a brief interruption of the movements of the sun could lead to serious ecological damage to parts of the earth exposed at the time. The fact that both Joshua and Moses caused the sun’s orbit to be arrested (for several hours in the case of Joshua) without negative fallout for the inhabitants of the earth caused people to become overawed by the power of Moses and Joshua respectively.
This miracle cannot be compared to that which occurred when King Chizkiyah of Yehudah asked that the hands of the sundial be reversed; this is why that King was not mentioned as in the same category as Moses, Joshua, and Nakdimon (compare Tossaphot Avodah Zarah 25). In that miracle the sun never stood still; it only traveled backwards for the appropriate amount of time, but it remained in motion. The word נקדה used by the Talmud in Taanit to described what happened to the sun for the sake of the three people mentioned is the same as the word נקודה, a stationary spot. That very word already makes it clear that what happened in those three instances was different from what happened at Chizkiyah’s request (compare Kings II 20,10-11).
This miracle cannot be compared to that which occurred when King Chizkiyah of Yehudah asked that the hands of the sundial be reversed; this is why that King was not mentioned as in the same category as Moses, Joshua, and Nakdimon (compare Tossaphot Avodah Zarah 25). In that miracle the sun never stood still; it only traveled backwards for the appropriate amount of time, but it remained in motion. The word נקדה used by the Talmud in Taanit to described what happened to the sun for the sake of the three people mentioned is the same as the word נקודה, a stationary spot. That very word already makes it clear that what happened in those three instances was different from what happened at Chizkiyah’s request (compare Kings II 20,10-11).