CC Antya 3.226

dui-janera bhaktye caitanya kailā avatāra
nāma-prema pracāri’ kailā jagat uddhāra
Word for word: 
dui-janera — of these two persons; bhaktye — because of the devotional service; caitanya — Lord Śrī Caitanya Mahāprabhu; kailā — made; avatāra — incarnation; nāma-prema — the holy name and love of Kṛṣṇa; pracāri’ — preaching; kailā — did; jagat uddhāra — deliverance of the whole world.
Translation: 
Because of the devotional service of these two persons, Lord Śrī Caitanya Mahāprabhu descended as an incarnation. Thus He preached the holy name of the Lord and ecstatic love of Kṛṣṇa to deliver the entire world.