"It may be remarked that the term 'servitude' (SERVITUS) used by
Spinoza as a description of what is generally called 'vice' or 'sin' and
what he calls 'impotence,' just as its opposite term 'liberty' used by
him later, is borrowed from New Testament as well as rabbinic theology
and reflects the expression 'servant of sin' (SERVUS PECATI in the
Vulgate)."
Harry Austryn Wolfson, The Philosophy of Spinoza.