sarvathā - in every respect; niścita - ascertained; iṅho - He; kṛṣṇa-avatāra - incarnation of Lord Kṛṣṇa; mathurā āilā - has come to Mathurā; lokera - of the people; karite - to perform; nistāra - deliverance.

“Certainly Śrī Caitanya Mahāprabhu is in all respects the incarnation of Lord Kṛṣṇa. Now He has come to Mathurā to deliver everyone.”