Matthew Henry on Nehemiah 2:1-8
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. Nearly four months passed, from Chisleu to Nisan (from November to March), before Nehemiah made his application to the king for leave to go to Jerusalem, either because the winter was not a proper time for such a journey, and he would not make the motion till he could pursue it, or because it was so long before his month of waiting came, and…
Read the whole note in the consoleJamieson-Fausset-Brown on Nehemiah 2:2
the king said unto me, Why is thy countenance sad?--It was deemed highly unbecoming to appear in the royal presence with any weeds or signs of sorrow (Est 4:2); and hence it was no wonder that the king was struck with the dejected air of his cupbearer, while that attendant, on his part, felt his agitation increased by his deep anxiety about the issue of the conversation so abruptly begun. But the piety and intense earnestness of the man immediately restored [Nehemiah] to calm self-possession and enabled him to communicate, first, the cause of his sadness (Neh 2:3), and next, the patriotic wish of his heart to be the honored instrument of reviving the ancient glory of the city of his fathers.
Adam Clarke on Nehemiah 2:4
So I prayed to the God of heaven - Before he dared to prefer his request to the king, he made his prayer to God, that his suit might be acceptable: and this he does by mental prayer. To the spirit of prayer every place is a praying place.
John Gill on Nehemiah 2:4
Then the king said unto me, for what dost thou make request?.... The king supposed that there was a meaning in those looks and words of his, that he had a favour to ask of him, and therefore encourages him to it; or the king of himself moved this, as being desirous of doing anything for him he would propose, to make him easy:
so I prayed to the God of heaven; secretly, in an ejaculatory way, giving him thanks for thus disposing the king's heart towards him, and entreating he might be directed what to ask, and in a proper manner, and that he might succeed.