15 So the wall was finished on the twenty-fifth day of the month Elul, in fifty-two days. 16 And when all our enemies heard of it, all the nations around us were afraid and fell greatly in their own esteem, for they perceived that this work had been accomplished with the help of our God. 17 Moreover, in those days the nobles of Judah sent many letters to Tobiah, and Tobiah's letters came to them. 18 For many in Judah were bound by oath to him, because he was the son-in-law of Shecaniah the son of Arah: and his son Jehohanan had taken the daughter of Meshullam the son of Berechiah as his wife. 19 Also they spoke of his good deeds in my presence and reported my words to him. And Tobiah sent letters to make me afraid.

Matthew Henry's Commentary on Nehemiah 6:15-19

Commentary on Nehemiah 6:15-19

(Read Nehemiah 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.