Where does it say we will be working with the Lord? We will be planting gardens and building houses and having babies...Isaiah 65:17-24
Isaiah 65:20 says there will be babies born in Heaven.
Isaiah 65:20 describes the Millennial Reign, where mortal people will continue to marry and have children.
Isaiah 65:17 says it is the New Earth.
It isn't the New Earth, but we will be busy working with the Lord during the Millennium restoring the Earth. You have to use your head a little. It describes people dying and sinning and accursed. You should know that death, the cursed and sin will not have a place in the Kingdom.
If you take the whole of scripture together, you know that we will not be in our mortal bodies during the Millennial Reign of Christ. We will be in our new glorified bodies, and ruling with Jesus. We will be the government, in charge of restoring earth after its devastation during the Tribulation, and in charge of all the nations who survive it. We won't be having any babies, but those who survive Tribulation will.
Do you think Isaiah was wrong when he said it was the new heaven and earth?
No, but you are wrong in presuming that God, who will make a New Heaven and a New Earth in the end, is talking about that, because we know that takes place after judgment, and no one will remain in their mortal bodies to procreate, or die, or be cursed at that time, as spoken of in verse 20.
Revelation 22:15 says sin will always be with us, just not allowed in Heaven.
We aren't discussing heaven.
Isaiah says there will always be ongoing salvation.
In what way?