BG Chap 10 - The result of knowing the vibhūtis of Kṛṣṇa
One who knows the opulence and the qualities of the Lord, and who accepts these as the highest truth, becomes fixed in unflinching bhakti. One who knows the vibhūtis which Kṛṣṇa will speak in summary, and bhakti yoga, and thus becomes endowed with great faith, will engage in unalloyed bhakti to Kṛṣṇa. This whole manifested universe, headed by prominent persons like Brahmā, Śiva and other devatās, the great sages such as Sanaka and the Manus such as Svāyambhuva, is endowed with śaktis of knowledge and power, which maintain and cause actions within the universe. These śaktis are dependent on Kṛṣṇa. The śaktis within this universe are called the universe’s vibhūti, which means ‘greatest power’. One who knows this vibhūti and the yoga (qualities such as no beginning and no birth), who accepts them with faith becomes endowed with steady bhakti yoga. Unless one is firmly convinced of the different opulences of the Supreme Lord, he cannot engage in devotional service. Generally people know that God is great, but they do not know in detail how God is great. Here are the details. If one knows factually how God is great, then naturally he becomes a surrendered soul and engages himself in the devotional service of the Lord.