This can be translated in active form. You may need to make explicit which house they completed. Alternate translation: "They completed God's house" or "They finished building the temple" (See: [[rc://en/ta/man/translate/figs-activepassive]] and [[rc://en/ta/man/translate/figs-explicit]])
"Adar" is the name of the twelfth and last month of the Hebrew calendar. It is during the cold season. The third day is near the middle of February on Western calendars. (See: [[rc://en/ta/man/translate/translate-hebrewmonths]] and [[rc://en/ta/man/translate/translate-names]] and [[rc://en/ta/man/translate/translate-ordinal]])
# sixth year
King Darius had been ruling for five years, so he was now in year number six of his reign. (See: [[rc://en/ta/man/translate/translate-ordinal]])