The Lord had a very high estimation of the affections of the damsels of Vrajabhūmi (Vṛndāvana) for Kṛṣṇa, and in appreciation of their unalloyed service to the Lord, once Śrī Caitanya Mahāprabhu chanted the holy names of the gopīs (cowherd girls) instead of the names of the Lord. At this time some of His students, who were also disciples, came to see Him, and when they saw that the Lord was chanting the names of the gopīs, they were astonished. Out of sheer foolishness they asked the Lord why He was chanting the names of the gopīs and advised Him to chant the name of Kṛṣṇa. The Lord, who was in ecstasy, was thus disturbed by these foolish students. He chastised them and chased them away. The students were almost the same age as the Lord, and thus they wrongly thought of the Lord as one of their peers. They held a meeting and resolved that they would attack the Lord if He dared to punish them again in such a manner. This incident provoked some malicious talks about the Lord on the part of the general public.
When the Lord became aware of this, He began to consider the various types of men found in society. He noted that especially the students, professors, fruitive workers, yogīs, nondevotees, and different types of atheists were all opposed to the devotional service of the Lord. "My mission is to deliver all the fallen souls of this age," He thought, "but if they commit offenses against Me, thinking Me to be an ordinary man, they will not benefit. If they are to begin their life of spiritual realization, they must some way or another offer obeisances unto Me." Thus the Lord decided to accept the renounced order of life (sannyāsa) because people in general were inclined to offer respects to a sannyāsī.
Five hundred years ago the condition of society was not as degraded as it is today. At that time people would show respects to a sannyāsī, and the sannyāsī was rigid in following the rules and regulations of the renounced order of life. Śrī Caitanya Mahāprabhu was not very much in favor of the renounced order of life in this age of Kali, but that was only for the reason that very few sannyāsīs in this age are able to observe the rules and regulations of sannyāsa life. Śrī Caitanya Mahāprabhu decided to accept the order and become an ideal sannyāsī so that the general populace would show Him respect. One is duty-bound to show respect to a sannyāsī, for a sannyāsī is considered to be the master of all varṇas and āśramas.
While He was contemplating accepting the sannyāsa order, it so happened that Keśava Bhāratī, a sannyāsī of the Māyāvādī school and resident of Katwa (in Bengal), visited Navadvīpa and was invited to dine with the Lord. When Keśava Bhāratī came to His house, the Lord asked him to award Him the sannyāsa order of life. This was a matter of formality. The sannyāsa order is to be accepted from another sannyāsī. Although the Lord was independent in all respects, still, to keep up the formalities of the śāstras, He accepted the sannyāsa order from Keśava Bhāratī, although Keśava Bhāratī was not in the Vaiṣṇava-sampradāya (school).
After consulting with Keśava Bhāratī, the Lord left Navadvīpa for Katwa to formally accept the sannyāsa order of life. He was accompanied by Śrīla Nityānanda Prabhu, Candraśekhara Ācārya, and Mukunda Datta. Those three assisted Him in the details of the ceremony. The incident of the Lord's accepting the sannyāsa order is very elaborately described in the Caitanya-bhāgavata by Śrīla Vṛndāvana dāsa Ṭhākura.
Thus at the end of His twenty-fourth year the Lord accepted the sannyāsa order of life in the month of Māgha. After accepting this order He became a full-fledged preacher of the Bhāgavata-dharma. Although He was doing the same preaching work in His householder life, when He experienced some obstacles to His preaching He sacrificed even the comfort of His home life for the sake of the fallen souls. In His householder life His chief assistants were Śrīla Advaita Prabhu and Śrīla Śrīvāsa Ṭhākura, but after He accepted the sannyāsa order His chief assistants became Śrīla Nityānanda Prabhu, who was deputed to preach specifically in Bengal, and the six Gosvāmīs (Rūpa Gosvāmī, Sanātana Gosvāmī, Jīva Gosvāmī, Gopāla Bhaṭṭa Gosvāmī, Raghunātha dāsa Gosvāmī and Raghunātha Bhaṭṭa Gosvāmī), headed by Śrīla Rūpa and Sanātana, who were deputed to go to Vṛndāvana to excavate the present places of pilgrimage. The present city of Vṛndāvana and the importance of Vrajabhūmi were thus disclosed by the will of Lord Śrī Caitanya Mahāprabhu.