כֹּֽה־אָמַ֣ר יְהוָ֗ה רִפִּ֨אתִי֙ לַמַּ֣יִם הָאֵ֔לֶּה
“… Thus says YHWH, ‘I have healed these waters’. …” (2 Kings 2.21) This little snippet is so rich. The city, Jericho, was “well-situated” but the water brought death and the land would not produce food. Do you know the back story? Joshua had cursed the place. After the walls of Jericho collapsed and the city was destroyed, Joshua cursed it. If any would rebuild the city, it would cost him his firstborn and his youngest son (Joshua 6.26). Later, this is exactly what happened (see 1 Kings 16.34). Apparently, this curse also affected the land itself with its springs.
(Note: Many bibles translate this verse as “I have purified the water,” which was also certainly the case. But the verb used is R-F-‘, which is the primary word in hebrew for the healing of something sick.)