the seventh month

This is the seventh month of the Hebrew calendar. It is at the end of the dry season and the beginning of the early rain season. It is during the last part of September and the first part of October on Western calendars. (See: rc://en/ta/man/translate/translate-hebrewmonths and rc://en/ta/man/translate/translate-ordinal)

as one man

One man is in only one place and has only one purpose. AT: "for one purpose" (See: rc://en/ta/man/translate/figs-simile)

This is the name of a man. Translate the same as in Esra 2:36.

Standing up is a metaphor for beginning to act. AT: "began to act and built" (See: rc://en/ta/man/translate/figs-metaphor)

This can be translated in active form. You may need to make explicit whom and what Yahweh had commanded. AT: "as Yahweh had commanded them to do in the law of Moses" (See: rc://en/ta/man/translate/figs-activepassive and rc://en/ta/man/translate/figs-explicit)