Bible probing eastern responsibilities over slavery (9)

'slavery' is the definition.
(I know that servitude is a type of slavery)

'bible probing eastern responsibilities over' is the wordplay.
'bible' becomes 'rv' (Revised Version, revision of King James Bible).
'probing' is an insertion indicator (probe can mean to poke or prod into).
'eastern' becomes 'e'.
'responsibilities' becomes 'duties' ('duty' can be a synonym of 'responsibility').
'over' says the letters should be written backwards.
'e'+'duties'='eduties'
'eduties' reversed gives 'seitude'.
'rv' going inside 'seitude' is 'SERVITUDE'.