Verses 16-19 describes a second battle when the Arameans who fled from Joab in [1 Chronicles 19:15](../19/15.md) were reinforced by other Arameans and attacked Israel again.
What the Arameans understood is spoken of as what they saw. Alternate translation: "the Arameans understood" (See: [[rc://en/ta/man/jit/figs-metonymy]])