"One cannot comprehend Him through reason, even if one reasoned for ages"

Human intellect, as sharp and persistent as it may be, remains fundamentally limited when tasked with grasping the Divine. Guru Nanak's words evoke the notion that God, or the ultimate reality, stands far beyond the reach of rational analysis and logical thought. No matter how refined our questions or how exhaustive our efforts, the faculties of reason and intellectual inquiry will always fall short of encompassing the infinite. Were a person to dedicate countless years or even lifetimes to the pursuit of spiritual truth using only the mind's analytical powers, the essential mystery of the Divine would persist, always receding just out of cognitive reach.

The statement gently challenges the belief that ultimate truths can be obtained purely through study, intellectual debate, or scientific methodology. While reason is a valuable tool in navigating the world, it is not equipped to measure or define that which is transcendent, timeless, and boundless. The quest for God or ultimate meaning, then, requires a humility, a willingness to admit the limits of human knowledge. Spiritual realization is depicted as unfolding not through cleverness or argument, but through openness, surrender, and receptivity to that which is greater than oneself.

Guru Nanak’s perspective ushers in the importance of experience, devotion, and grace in spiritual life. Faith, love, and direct personal engagement with the Divine become essential, as opposed to mere philosophical speculation. This approach does not diminish the value of reasoned thought, but suggests its proper place: as useful within its own domain, yet inevitably secondary when it comes to matters beyond form and concept. The heart, intuition, and inner surrender become vital means for approaching the Divine mystery, signaling that to know God, one must transcend the limitations of mind and engage with the sacred using the fullness of one’s being.