Sermon 210 is delivered in the historical context of Imam Ali's (a.s.) caliphate, a time when the Islamic community faced various challenges. In this sermon, Imam Ali emphasizes the importance of justice, reform, and standing against oppression. It addresses those who turn away from the truth despite having heard it.

Key themes of this sermon include the support of justice, distancing from oppression, and the reform of religion. Imam Ali condemns those who, after hearing the truth, refuse to follow it. This serves as a powerful reminder that Allah's support is with those who stand for truth and oppose oppression.

A significant phrase from the sermon is: "who conforms to the requirements of justice, and separates from oppression and oppression." This implies that a Muslim's duty is to embrace justice and reform in their lives while staying away from evil. It is a moral lesson that we must understand our responsibilities and act upon them.

One practical takeaway from this sermon is that we should always stand in support of the truth, regardless of how difficult the circumstances may be. Our decisions should be based on our faith, and we should trust in Allah's help. Imam Ali's message continues to guide us on how we can establish a better society today.