2 Chronicles 6:15 in the World English Bible
who have kept with your servant David my father that which you promised him. Yes, you spoke with your mouth, and have fulfilled it with your hand, as it is today.
Context
14 And said, O LORD God of Israel, there is no God like thee in the heaven, nor in the earth; which keepest covenant, and shewest mercy unto thy servants, that walk before thee with all their hearts:
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.
16 Now therefore, O LORD God of Israel, keep with thy servant David my father that which thou hast promised him, saying, There shall not fail thee a man in my sight to sit upon the throne of Israel; yet so that thy children take heed to their way to walk in my law, as thou hast walked before me.