(17-19) A supplementary account is here introduced, explaining the intrigues within Jerusalem to which reference has been made.
(17) Many letters.--There was a large correspondence between Tobiah and the nobles of Judah.
Verse 17. - Moreover in those days. Ewald supposes that the circumstances here related (vers. 17-19) were subsequent to the completion of the wall ('History of Israel,' vol. 5. p. 157); but the expression "in those days" seems rather to throw back the events into the time during which the wall was in building. The passage is a sort of explanatory note, showing us how Tobiah came to be able to raise those intrigues inside Jerusalem which have been mentioned in vers. 12-14.
And the letters of Tobiah came unto them. Rather, "and many were the letters of Tobiah which came to them."
6:15-19 The wall was begun and finished in fifty-two days, though they rested on the sabbaths. A great deal of work may be done in a little time, if we set about it in earnest, and keep close to it. See the mischief of marrying with strangers. When men once became akin to Tobiah, they soon became sworn to him. A sinful love leads to a sinful league. The enemy of souls employs many instruments, and forms many projects, to bring reproach on the active servants of God, or to take them from their work. But we should follow the example of Him who laid down his life for the sheep. Those that simply cleave to the Lord and his work will be supported.
Moreover, in those days,.... While the wall was building:
the nobles of Judah sent many letters to Tobiah, and the letters of Tobiah came unto them; letters passed between them frequently, they informing him how things went on at Jerusalem, and he advising them to what was detrimental to the true interest of their nation; such false friends had Nehemiah about him, and yet the work succeeded under him; which showed it the more to be of God.