In all this time. Literally, "during all this"—while all this was being done. The reference seems to be solely to the affair of Eliashib and Tobiah. Artaxerxes, king of Babylon. The title "king of Babylon," which was certainly borne by Cyrus, Cambyses, and Darius Hystaspis, may have continued in use down to the time of Nehemiah, or even later.
If he visited Artaxerxes at Babylon, the court happening to be there at the time, he would naturally think and speak of him as "king of Babylon.'' After certain days. Literally, "at the end of days," which is thought to mean "at the expiration of a year."
I obtained leave of the king. Gesenius and Professor Lee render, "I asked leave of the king; Houbigant, Rambach, and others, "I was asked for from the king," i.e. "the Jews asked to have me sent back to govern them."