Bhagavad Gita 10.7

एतं विभूति योगं च मम यो वेत्ति तत्त्वत: |
सोऽविकम्पेन योगेन युज्यते नात्र संशयः

Translation

Those who know in truth My glories and divine powers become united with Me through unwavering Bhakti Yog. Of this there is no doubt.