There is no end to My divine opulences, oh scorcher of the enemy. This is only an indication of the extent of My opulences mentioned by Me.

Nāntaḥ asti — there is no end — to the divyāḥ vibhūtiḥ (divine opulences). What has been said is merely a sample (uddeśataḥ), not an exhaustive list.

Vistaraḥ — extension, expansion — the vibhūtis are unlimited because the Lord is unlimited. Each manifestation in the universe is, in a sense, a vibhūti.

Arjuna is called parantapa because he must use this understanding in battle: recognize the Lord in everything, especially in victory.