Bengali language, Bengali Bangla, member of the Indo-Aryan group of the Indo-Iranian branch of the Indo-European language family.

Is Bengali Hindu language?

Bengali Hindus speak Bengali, which belongs to the Indo-Aryan language family and adhere Vaishnavism (Gaudiya Vaishnavism and Vaishnava-Sahajiya) and Shaktism of their native religion Hinduism with some regional deities. There are significant numbers of Bengali-speaking Hindus in different Indian states.

Which is older Hindi or Bengali?

So Bengali is 500 years older than Hindu and Urdu.