God promised Abraham offspring in his old age, and blessed him in Genesis 12:2-3 saying,”And I will make of you a great nation, and I will bless you and make your name great, so that you will be a blessing. I will bless those who bless you, and him who dishonors you I will curse, and in you all the families of the earth shall be blessed.“
To David God promised that his offspring will reign forever as king. 2 Samuel 2:12-17, “…I will raise up your offspring after you, who shall come from your body, and I will establish his kingdom. He shall build a house for my name, and I will establish the throne of his kingdom forever. I will be to him a father, and he shall be to me a son…And your house and your kingdom shall be made sure forever before me. Your throne shall be established forever.“
Come Thou Long Expected Jesus
by Charles Wesley,
written in 1774
Come, Thou long expected Jesus
Born to set Thy people free;
From our fears and sins release us,
Let us find our rest in Thee.
Israel’s Strength and Consolation,
Hope of all the earth Thou art;
Dear Desire of every nation,
Joy of every longing heart.
Born Thy people to deliver,
Born a child and yet a King,
Born to reign in us forever,
Now Thy gracious kingdom bring.
By Thine own eternal Spirit
Rule in all our hearts alone;
By Thine all sufficient merit,
Raise us to Thy glorious throne.