'Let Us' in the Bible

they came to Zerubbabel [who was now governor] and to the heads of the fathers’ households and said to them, “Let us build with you, for we seek your God [and worship] just as you do; and we have sacrificed to Him since the days of Esarhaddon king of Assyria, who brought us up here.”

Therefore let us now make a covenant with our God to send away all the [foreign] wives and their children, in accordance with the advice of my lord and of those who tremble [in reverent obedience] at the commandment of our God; and let it be done in accordance with the Law.