'Us' in the Bible

For indeed Christ died for sins once for all, the Just and Righteous for the unjust and unrighteous [the Innocent for the guilty] so that He might bring us to God, having been put to death in the flesh, but made alive in the Spirit;

Therefore, since Christ suffered in the flesh [and died for us], arm yourselves [like warriors] with the same purpose [being willing to suffer for doing what is right and pleasing God], because whoever has suffered in the flesh [being like-minded with Christ] is done with [intentional] sin [having stopped pleasing the world],

For it is the time [destined] for judgment to begin with the household of God; and if it begins with us, what will the outcome be for those who do not respect or believe or obey the gospel of God?