In Vajrayāna, the role of the guru, or spiritual teacher, is of utmost importance. The guru is seen as the primary source of guidance and instruction on the path towards enlightenment. They are considered to be the embodiment of the Buddha and the ultimate guide for their students.

The relationship between the guru and student is referred to as the guru-disciple relationship, and it is based on mutual trust, respect, and devotion. The guru is seen as a living representation of the teachings and serves as a role model for their students.

One of the main roles of the guru in Vajrayāna is to transmit teachings and empowerments to their students. These teachings and empowerments are considered to be sacred and are passed down through an unbroken lineage from the Buddha himself. Through these transmissions, the guru helps their students to develop a deeper understanding and experience of the teachings.

The guru also plays a crucial role in providing personal guidance and support to their students. They offer individualized instruction and advice based on the unique needs and abilities of each student. This personalized guidance is seen as essential in helping students progress on their spiritual journey.

In addition to transmitting teachings and providing personal guidance, the guru also serves as a spiritual friend and mentor. They offer emotional support and encouragement to their students, helping them to overcome obstacles and challenges on the path.

Another critical role of the guru in Vajrayāna is to act as a spiritual catalyst. Through their presence and blessings, the guru helps to awaken the innate wisdom and potential within their students. They also provide methods and practices to help their students purify their minds and cultivate positive qualities such as compassion and wisdom.

It is important to note that in Vajrayāna, the guru is not seen as a deity or worshipped as such. They are seen as a guide and a friend, but the ultimate source of refuge and enlightenment is still the Buddha himself.

In conclusion, the role of the guru in Vajrayāna is multifaceted and essential. They serve as the primary source of guidance, instruction, and support on the path towards enlightenment. Their role is not to be underestimated, as they play a crucial role in helping students achieve spiritual realization.