en_tn_lite_do_not_use/jos/05/01.md

their hearts melted ... there was no longer any spirit in them

These two phrases mean basically the same thing and emphasize the intensity of their fear. (See: rc://en/ta/man/translate/figs-parallelism)

their hearts melted

Here "hearts" refers to their courage. They were so afraid that it was as if their courage melted away like wax in a fire. AT: "they lost all their courage" (See: rc://en/ta/man/translate/figs-metonymy and rc://en/ta/man/translate/figs-metaphor)

there was no longer any spirit in them

Here "spirit" refers to their will to fight. AT: "they no longer had any will to fight" (See: rc://en/ta/man/translate/figs-metonymy)