NET
15 You have kept your word to your servant, my father David; this very day you have fulfilled what you promised.
Darby
15 who hast kept with thy servant David my father that which thou didst promise him; thou spokest with thy mouth, and hast fulfilled [it] with thy hand as at this day.
KJV
15 Thou which hast kept with thy servant David my father that which thou hast promised him; and spakest with thy mouth, and hast fulfilled [it] with thine hand, as [it is] this day.