CC Madhya 19.220

īśvara-jñāna, sambhrama-gaurava pracura
‘sevā’ kari’ kṛṣṇe sukha dena nirantara
Word for word: 
īśvara-jñāna — knowledge of the supreme controller; sambhrama-gaurava — awe and veneration; pracura — abundant; sevā — service; kari’ — performing; kṛṣṇe — unto Lord Kṛṣṇa; sukha — happiness; dena — gives; nirantara — constantly.
Translation: 
“On the dāsya-rasa platform, knowledge of the Supreme Personality of Godhead is revealed with awe and veneration. By rendering service unto Lord Kṛṣṇa, the devotee in dāsya-rasa gives constant happiness to the Lord.