God already gave us a picture to go on about His Eternity.
Isa 65:17-25
17 For, behold, I create new heavens and a new earth: and the former shall not be remembered, nor come into mind.
18 But be ye glad and rejoice for ever in that which I create: for, behold, I create Jerusalem a rejoicing, and her people a joy.
19 And I will rejoice in Jerusalem, and joy in My people: and the voice of weeping shall be no more heard in her, nor the voice of crying.
20 There shall be no more thence an infant of days, nor an old man that hath not filled his days: for the child shall die an hundred years old; but the sinner being an hundred years old shall be accursed.
21 And they shall build houses, and inhabit them; and they shall plant vineyards, and eat the fruit of them.
22 They shall not build, and another inhabit; they shall not plant, and another eat: for as the days of a tree are the days of My people, and Mine elect shall long enjoy the work of their hands.
23 They shall not labour in vain, nor bring forth for trouble; for they are the seed of the blessed of the LORD, and their offspring with them.
24 And it shall come to pass, that before they call, I will answer; and while they are yet speaking, I will hear.
25 The wolf and the lamb shall feed together, and the lion shall eat straw like the bullock: and dust shall be the serpent's meat. They shall not hurt nor destroy in all My holy mountain, saith the LORD.
(KJV)
In Isaiah 45:18, God said He created this earth to be inhabited, i.e., lived upon. And it will be. The meek shall inherit it.
Our Lord gave us many examples of what the resurrection body will be like, even using His Own transfigured Body as an example. Even though He told Thomas a ghost has not flesh and bones like he saw Him have, that was for Thomas' sake He did that. We know a flesh body like today cannot enter a room with closed windows and doors like our Lord Jesus did when He suddenly appeared in the midst of His disciples after His Resurrection.
In Gen.18 Abraham fed the angels that appeared to him at his tent door. One of them was the Angel of The Lord. They ate man's food, just like our Lord Jesus ate fish and honeycomb in His Resurrection Body. Paul even said for us to be mindful to entertain strangers, for some have entertained angels unaware. That means in reality, God's angels look just like men. And our Lord Jesus said in Matt.22:30 those of the resurrection are as the angels of God in heaven. And remember, it was angel's food (manna) which the Israelites ate in the wilderness for 40 years.
Paul further taught that as we have put on the "image of the earthly", we shall all also put on the "image of the heavenly" (1 Cor.15). He said there is a natural body, and there is a spiritual body. The spiritual body is a type body of incorruption. It does not die like our flesh. It is a type body of the heavenly dimension. It can be touched and feels just like flesh (like Thomas touched our Lord's Body). It can walk upon and live upon the earth. It's simply not a type body of this earthly dimension, yet it can manifest and live upon this earth. It is an eternal type body, yet it CAN still be destroyed by our Heavenly Father, for the devil and his angels have never been born in the flesh, and it's not written they ever will be, yet it is written they will be destroyed and perish forever. For the redeemed, they will never be subject to death ever again.
In Luke 12, our Lord Jesus told us to not fear those who can kill our flesh body, and there's nothing more they can do. But to fear Him Who after one is killed, That has power to cast into the lake of fire (in that verse "hell"= geena, a word used for the valley of Hinnom, a symbolic parallel to the "lake of fire" of Rev.20).
Isaiah 65 even gives us different picture of how animals will be. The lion eating straw, and the wolf laying down with the lamb is a picture of no more carnivours (meat eaters; National Geographic's study of today's wildlife won't fit how God's creation is going to manifest in that time).