The spiritual master accepts the disciples’ service only so that the disciples can become qualified receptacles for the knowledge He wishes to impart. Krishna Himself has a similar motivation. He is not looking for external surrender but for a depth of faith and love. Krishna says, “As they surrender unto Me, I reward them accordingly.” That reward is the knowledge of how to come closer to Him. Krishna wants to give us the gift of unalloyed devotional service. Similarly, the spiritual master seeks qualified candidates to receive transcendental knowledge.