The previous portion of scripture, is quite extraordinary. It shows us how much the sovereign God of the universe, chose to love a human being. However, it doesn't end there. God wants all of us to live in union with him, just as King David did. We see this in Isaiah 55:1-5, 56:1-8.
1 The Lord says,
"Come, everyone who is thirsty--
here is water!
Come, you that have no money--
buy grain and eat!
Come! Buy wine and milk--
it will cost you nothing!
2 Why spend money on what does not satisfy? Why spend your wages and still be hungry?
Listen to me and do what I say, and you will enjoy the best food of all.
3 "Listen now, my people, and come to me;
come to me, and you will have life!
I will make a lasting covenant with you
and give you the blessings I promised to David.
4 I made him a leader and commander of nations,
and through him I showed them my power.
5 Now you will summon foreign nations;
at one time they did not know you,
but now they will come running to join you!
I, the Lord your God, the holy God of Israel,
will make all this happen;
I will give you honor and glory."
-Isaiah 55:1-5
The Lord says to his people, "Do what is just and right, for soon I will save you. I will bless those who always observe the Sabbath and do not misuse it. I will bless those who do nothing evil."
A foreigner who has joined the Lord's people should not say, "The Lord will not let me worship with his people."
A man who has been castrated should never think that because he cannot have children, he can never be part of God's people. The Lord says to such a man, "If you honor me by observing the Sabbath and if you do what pleases me and faithfully keep my covenant, then your name will be remembered in my Temple and among my people longer than if you had sons and daughters. You will never be forgotten."
And the Lord says to those foreigners who become part of his people, who love him and serve him, who observe the Sabbath and faithfully keep his covenant: "I will bring you to Zion, my sacred hill, give you joy in my house of prayer, and accept the sacrifices you offer on my altar. My Temple will be called a house of prayer for the people of all nations."
The Sovereign Lord, who has brought his people Israel home from exile, has promised that he will bring still other people to join them.
-Isaiah 56:1-8