Esther 2:22
And the thing was known to Mordecai, who told it unto Esther the queen; and Esther certified the king thereof in Mordecai’s name. And the thing was known to Mordecai, who told it unto Esther the queen; and Esther certified the king thereof in Mordecai’s name.
Mordecai was positioned at the king's gate when this took place. He learned of a plot to kill and assassinate the king, formed by two men who were two of the king's chamberlains, with the king identified as Ahasuerus the Persian king. Having discovered the conspiracy, he told it to Queen Esther, and Esther reported it to the king in Mordecai's name, or under Mordecai's name.
God used Mordecai in this to save the king's life. Mordecai's loyalty in the act was recorded in the royal chronicles. The events that later brought that record to the king's attention were God's direct working, not mere chance.
The act and its record later became an important and pivotal part of the events leading to the deliverance of Mordecai, Israel, and his people. Mordecai's earlier service in saving the king's life later became part of the history surrounding Haman's hatred of him and the threat against the Jews. The report is an example of an assassination scheme of a kind that could make a ruler suspect another person of plotting against him.
Mordecai's presence at the gate applies to Sabbath keepers, who are seen by their opponents as unwelcome intruders to be removed. Mordecai being portrayed as a threat to the king's interests applies to how opponents of compulsory Sunday laws regard those who defend religious liberty and conscience as obstacles to their plans. His identifying the plot parallels how such groups identify and target those who keep God's commandments.