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What is "Shokekah"?
1.
Radak: It is To'ar (descriptive); the middle letter of the root (Vov) is silent. This is like "v'El Ishech Teshukasech" (Bereishis 3:16). The grammatical form is like "Mashach Yado Es Lotzetzim" (Hoshe'a 7:5). The Nefesh desired water in the Midbar, and now it is satiated when it reached a settled city.