John Trapp on Nehemiah 4:7

Verſe 7. And the Arabians and the Ammonites] A rabble of Malignants meet and make head. Sanballat, by the help of Tobiah, had now gotten a great band of ſouldiers, and ſpecially of Arabians, Ammonites, and Aſhdodites, to fight for him againſt this feeble folk, but yet armed with God, and that had him for their champion. So we may ſee how readily one wicked man will be drawn to help another: and how the wickedneſſe of one will infect another that will give eare to it. Read Pſalm 83.6, 7, 8. Rev. 16.16, 17, &c.

Heard that the walls of Jeruſalem were made up] Heb. That health (or as the old Tranſlation hath it, a ſalve) aſcended upon the walls. A Metaphor from Chirurgeons, who when they heal wounds by ſalves or plaiſters joyne the fleſh together again, which before was cut in ſunder: ſo the breaches of the walls, which afore lay gaping open, were joyned together, and made ſound, as though it were one entire wall, & quaſi tota moles in tantam magnitudinem ex unico ingenti lapide tam magnificè conſurgeret.

Then they were very wroth] That old enmity, Gen. 3.15. ſtirred in them, and they were ſoon kindled; Satan being the boutefeau, or kindle-coale. See verſe 1.