God promises king David that he will have a special descendant whose reign will not end:
12 When your days are fulfilled, and you sleep with your fathers, I will set up your offspring after you, who will proceed out of your body, and I will establish his kingdom. 13 He will build a house for my name, and I will establish the throne of his kingdom forever.
The same promise is also recorded in the Chronicles record:
11 It will happen, when your days are fulfilled that you must go to be with your fathers, that I will set up your offspring after you, who will be of your sons; and I will establish his kingdom. 12 He will build me a house, and I will establish his throne forever. 13 I will be his father, and he will be my son. I will not take my loving kindness away from him, as I took it from him that was before you; 14 but I will settle him in my house and in my kingdom forever. His throne will be established forever.” ’ ”
The Psalms say that God has promised to give David a descendant who will be king:
3 “I have made a covenant with my chosen one,
I have sworn to David, my servant,
4 ‘I will establish your offspring forever,
and build up your throne to all generations.’ ”
11 The LORD has sworn to David in truth.
He will not turn from it:
“I will set the fruit of your body on your throne.
In their preaching, the apostles Peter and Paul say that Jesus is the special descendant promised to David:
29 “Brothers, I may tell you freely of the patriarch David, that he both died and was buried, and his tomb is with us to this day. 30 Therefore, being a prophet, and knowing that God had sworn with an oath to him that of the fruit of his body, according to the flesh, he would raise up the Christ to sit on his throne,
22 When he had removed him, he raised up David to be their king, to whom he also testified, ‘I have found David the son of Jesse, a man after my heart, who will do all my will.’ 23 From this man’s offspring, God has brought salvation to Israel according to his promise,