Then it came to pass

"And it happened that"

harpist

someone who plays the harp

Here Yahweh's "hand" refers to his "power." AT: "the power of Yahweh came upon Elisha" (See: rc://en/ta/man/translate/figs-metonymy)

A trench is a long ditch that workers dig in the ground to collect water.

This can be stated in active form. AT: "I will fill this river valley with water" (See: rc://en/ta/man/translate/figs-activepassive)

This refers to drinking the water that Yahweh provides. AT: "you will drink the water" (See: rc://en/ta/man/translate/figs-explicit)