He very carefully followed the principles enunciated by the Lord, and he was a competent person to explain properly the pastimes of Krsna. Caitanya expanded His mercy to Rupa Gosvami just so he could render service by writing transcendental literatures

Expressions researched:
"He very carefully followed the principles enunciated by the Lord, and he was a competent person to explain properly the pastimes of Lord Kṛṣṇa. Śrī Caitanya Mahāprabhu expanded His mercy to Śrīla Rūpa Gosvāmī just so he could render service by writing transcendental literatures"

Sri Caitanya-caritamrta

CC Madhya-lila

“Indeed, Śrīla Rūpa Gosvāmī, whose dear friend was Svarūpa Dāmodara, was the exact replica of Śrī Caitanya Mahāprabhu, and he was very, very dear to the Lord. Being the embodiment of Śrī Caitanya Mahāprabhu’s ecstatic love, Rūpa Gosvāmī was naturally very beautiful. He very carefully followed the principles enunciated by the Lord, and he was a competent person to explain properly the pastimes of Lord Kṛṣṇa. Śrī Caitanya Mahāprabhu expanded His mercy to Śrīla Rūpa Gosvāmī just so he could render service by writing transcendental literatures.”

CC Madhya 19.121, Translation

“Indeed, Śrīla Rūpa Gosvāmī, whose dear friend was Svarūpa Dāmodara, was the exact replica of Śrī Caitanya Mahāprabhu, and he was very, very dear to the Lord. Being the embodiment of Śrī Caitanya Mahāprabhu’s ecstatic love, Rūpa Gosvāmī was naturally very beautiful. He very carefully followed the principles enunciated by the Lord, and he was a competent person to explain properly the pastimes of Lord Kṛṣṇa. Śrī Caitanya Mahāprabhu expanded His mercy to Śrīla Rūpa Gosvāmī just so he could render service by writing transcendental literatures.”