CC Ādi 3.90
লুকাইতে নারে কৃষ্ণ ভক্তজন–স্থানে ॥ ৯০ ॥
lukāite nāre kṛṣṇa bhakta-jana-sthāne
Those whose nature is demoniac cannot know Kṛṣṇa at any time, but He cannot hide Himself from His pure devotees.
People who develop the nature of asuras like Rāvaṇa and Hiraṇyakaśipu can never know Kṛṣṇa, the Personality of Godhead, by challenging the authority of Godhead. But Śrī Kṛṣṇa cannot hide Himself from His pure devotees.