'Promised' in the Bible

Now the Lord has fulfilled His word which He spoke; for I have risen in the place of my father David and sit on the throne of Israel, as the Lord promised, and have built the house for the name of the Lord, the God of Israel.

who has kept with Your servant David, my father, that which You have promised him; indeed You have spoken with Your mouth and have fulfilled it with Your hand, as it is this day.

Now therefore, O Lord, the God of Israel, keep with Your servant David, my father, that which You have promised him, saying, ‘You shall not lack a man to sit on the throne of Israel, if only your sons take heed to their way, to walk in My law as you have walked before Me.’

Yet the Lord was not willing to destroy the house of David because of the covenant which He had made with David, and since He had promised to give a lamp to him and his sons forever.