Here's the dictionary definition. succession of rulers of the same line of descent (see DESCENT sense 1a) //a dynasty that ruled China for nearly 300 years 2: a powerful group or family that maintains its position for a considerable time //born into a powerful political dynasty //a baseball dynasty
You could say that the kingship of Israel is intended to be a dynasty. But there hasn't been a ruler from the House of David in Israel for about 2,300 years