God made a promise to Abraham to bless all the families of the earth through him. God added to this promise when He promised king David (a descendant of Abraham) that his kingdom would last forever with a descendant of his on the throne. These promises, and many more, were fulfilled in Jesus, a descendant of Abraham, a member of David’s family, and the lamb of God who would take away the sin of the world. 

In these three verses, there are three promises that give us hope. These were words of hope for Juda for their restoration from captivity. And looking beyond the near horizon to what is beyond these are words of hope for all the world that there is salvation in Jesus.