Nehemiah
Nehemiah 2:7ESV·traditional attribution

And I said to the king, “If it pleases the king, let letters be given me to the governors of the province Beyond the River, that they may let me pass through until I come to Judah,

Matthew Henry Presbyterian @wholebiblehenry

When Nehemiah had prayed for the relief of his countrymen, and perhaps in David's words (Psa 51:18, Build thou the walls of Jerusalem), he did not sit still and say, "Let God now do his own work, for I have no more to do," but set himself to forecast what he could do towards it. our prayers must be seconded with our serious endeavours, else we mock God.

Commenting on Nehemiah 2:1-8

John Gill Reformed Baptist @doctorgill

Moreover, I said unto the king, let letters be given me to the governors beyond the river,.... The river of Euphrates, on that side of it towards the land of Judea: that they may convey me over till I come into Judah; furnish him with provisions, and a guard to protect him.

Jamieson-Fausset-Brown Reformed @jfbcommentary

letters be given me to the governors beyond the river--The Persian empire at this time was of vast extent, reaching from the Indus to the Mediterranean. The Euphrates was considered as naturally dividing it into two parts, eastern and western (see on Ezr 5:3).