"Chanoch's life was one of great success; he acted as an eved to Hashem by dedicating all of his daily activities to His service." (source)
"An eved Ivri works six full years and goes free at the start of his seventh year of servitude, unless a yovel year arrives first, in which case every eved Ivri goes free." (source)
"We moved from being avadim (slaves) under Pharaoh – to becoming avadim under HaShem." (source)