G4279–προεπαγγέλλω–proepangellō

which God had already promised through His Prophets in Holy Writ, concerning His Son,

προεπηγγείλατο proepēngeilato “He promised beforehand”

I have thought it absolutely necessary therefore to request these brethren to visit you before I myself come, and to make sure beforehand that the gift of love which you have already promised may be ready as a gift of love, and may not seem to have been

προεπηγγελμένην proepēngelmenēn “having pre-promised”