PURPORT

Srila Visvanatha Cakravarti Thakura specifically hints that since Gajendra was in such a difficult position and was praying for the mercy of the Supreme Personality of Godhead, the demigods, who could have immediately gone to his rescue, hesitated to go there. Since they considered Gajendra's prayer to be directed toward the Lord, they felt offended, and this in itself was offensive. Consequently, when the Lord went there, they also went and offered prayers to the Lord so that their offense might be excused.