Acharya Prashant explains that the significance of an idol lies in its ability to evoke a sense of devotion and remind the mind of something beyond worldly affairs. He clarifies that everything in the world with a form, color, or shape is essentially a 'murti' or an idol. While most worldly forms bind the mind to material attachments, religious idols are designed to redirect the consciousness toward the formless. He emphasizes that the power or energy perceived in an object is not inherent in the physical matter but is a result of the observer's own mental associations and consciousness shifting away from mundane thoughts.