Regarding many reports about the confusion of Shias in recognizing the denotations of Imam, it is necessary to address the causal reasons behind this phenomenon in Shia history. One of these reasons is the suppressing condition dominating the Shia community and the resulting precautionary concealment. Exploring the confusion instances in the Shia community shows that how the suppressing condition created by the governors of the cruel caliphate system for controlling the Shia community caused these traditions denoting the names of the Pure Imams to be hidden as a secret among some noble Twelvers and be out of public access, and this challenged Shias in being guided towards the denotations of Imam.