'Let Us' in the Bible

And David said to all the congregation of Israel, If it seemeth good to you, and that it is of the LORD our God, let us send abroad to our brethren every where, that are left in all the land of Israel, and with them also to the priests and Levites who are in their cities and suburbs, that they may assemble to us:

And let us bring again to us the ark of our God: for we inquired not at it in the days of Saul.

Be of good courage, and let us behave ourselves valiantly for our people, and for the cities of our God: and let the LORD do that which is good in his sight.