The guru is God himself manifesting in a personal form to guide the aspirant. Grace of God takes the form of the guru. To see the guru is to see God. The guru is united with God. He inspires devotion in others and his presence purifies all.
The guru is verily a link between the individual and the immortal. He is a being who has raised himself from this to That, and thus has free and unhampered access into both realms. He stands, as it were, upon the threshold of immortality; and, bending down he raises the struggling individuals with one hand, while with the other he lifts them up into the imperium of everlasting joy and infinite truth-consciousness.
The true guru is Brahman himself. He is an ocean of bliss, knowledge and mercy. He is the captain of your soul, the fountain of joy. He removes all your troubles, sorrows and obstacles. He shows you the right divine path and tears your veil of ignorance. He makes you immortal and divine, transmuting your lower, diabolical nature. He gives you the rope of knowledge, and takes you up when you are drowning in this ocean of births and deaths. Do not consider him to be only a man, for, if you do, you are a beast. Worship your guru and bow to him with reverence. Guru is God. A word from him is a word from God. He need not teach anything. Even his presence or company is elevating, inspiring and stirring, his very company being self-illumination. Living in his company is spiritual education. Read the Granth-Saheb (the holy scripture of the Sikh religion). You will come to know the greatness of the guru.
Man can learn only from man, and hence God teaches through a human body. In your guru, you have your human ideal of perfection, the pattern into which you wish to mould yourself. Your mind will readily be convinced that such a great soul is fit to be worshipped and revered.
Guru is the door to liberation, the gateway to the transcendental truth-consciousness. But, it is the aspirant that has to enter through it. The guru is a help, but the actual task of practical spiritual practice falls on the aspirant himself.
The guru’s tender smile radiates light, bliss joy, knowledge, peace. He is a blessing to suffering humanity. Whatever he says is Upanishadic teaching. The guru knows the spiritual path. He knows the pitfalls and snares on the way. He gives timely warning to his students. He showers his grace on their hands. All agonies, miseries, tribulations, taints of worldliness, etc., vanish in his presence.