prabhura āveśe - because of the ecstatic emotions of Śrī Caitanya Mahāprabhu; avaśa - helpless; sarva-bhakta-gaṇa - all the devotees; prema-āveśe - in great ecstatic love; sabe - all of them; nāce - dance; karena kīrtana - and perform congregational chanting.

Because of Śrī Caitanya Mahāprabhu’s ecstatic love, all the devotees were helpless, and in ecstatic love they also began to dance and chant congregationally.