This is the symptom of a pure devotee. One should serve the spiritual master first. It is not that one should bypass the spiritual master and desire to serve the Supreme Lord.This is not the Principle for a Vaishnava. — Srimad Bhagavatam, 07.09.28.
Lord Shambhu (Shiva) the greatest of Vaishnavas.
Srimad Bhagavatam 12.13.16
The highest is the Vaishnava. Ideal vaishnava means he is a parama-hamsa. That means he is not envious from anybody. He is always thinking how to take others back to Godhead.
A Vaisnava is personally tolerant for the benefit of others. When he does not show his prowess, this does not mean that he is lacking in strength ; rather, it indicates that he is tolerant for the welfare of the entire human society.
Vaishnava means whatever he does is for the pleasure of Krishna, service to Krishna without any motivation. He is always happy & joyful. Krishna will take care of him & when he leaves his body, he always lives with Krishna & his associates. This should be our business.