The heavenly demigods are certainly more intelligent, powerful and beautiful, and yet they had to take help from Arjuna because of his Gāṇḍīva bow, which was empowered by the grace of Lord Śrī Kṛṣṇa. The Lord is all-powerful, and by His grace His pure devotee can be as powerful as He may desire, and there is no limit to it. And when the Lord withdraws His power from anyone, he is powerless by the will of the Lord.
When I (Arjuna) stayed for some days as a guest in the heavenly planets, all the heavenly demigods, including King Indradeva, took shelter of my arms, which were marked with the Gandiva bow, to kill the demon named Nivatakavaca
Expressions researched:
"When I stayed for some days as a guest in the heavenly planets, all the heavenly demigods, including King Indradeva, took shelter of my arms, which were marked with the Gāṇḍīva bow, to kill the demon named Nivātakavaca"
Srimad-Bhagavatam
SB Canto 1
When I stayed for some days as a guest in the heavenly planets, all the heavenly demigods, including King Indradeva, took shelter of my arms, which were marked with the Gāṇḍīva bow, to kill the demon named Nivātakavaca. O King, descendant of Ajamīḍha, at the present moment I am bereft of the Supreme Personality of Godhead, by whose influence I was so powerful.
When I stayed for some days as a guest in the heavenly planets, all the heavenly demigods, including King Indradeva, took shelter of my arms, which were marked with the Gāṇḍīva bow, to kill the demon named Nivātakavaca. O King, descendant of Ajamīḍha, at the present moment I am bereft of the Supreme Personality of Godhead, by whose influence I was so powerful.