Which preposition to use with jebusites

from Occurrences 1%

Yet, as all folly would lay claim to sense, And wickedness ne'er wanted a pretence, With arguments they'd make their treason good, And righteous David's self with slanders load: That arts of foreign sway he did affect, And guilty Jebusites from law protect, Whose very chiefs, convict, were never freed, Nay, we have seen their sacrificers bleed!

Which preposition to use with  jebusites