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21Then I warned them and said to them, “Why do you spend the night in front of the wall? If you do so again, I will use force against you.” From that time on they did not come on the Sabbath. 22And I ordered the Levites that they were to purify themselves and come as gatekeepers to sanctify the Sabbath day. For this also remember me, my God, and have compassion on me according to the greatness of Your mercy.