I've heard many ET believers use the verse that talks about God's thoughts are not our thoughts and His ways are not our ways as a way to "explain" ET. ...
Ok... I haven't explained in any detail how I arrived at the paraphrases, but here goes. This is how I read the second layer of scripture to evaluate if it has anything to do with UR or not.
1 Ho, every one that thirsteth, come ye to the waters, and he that hath no money; come ye, buy, and eat; yea, come, buy wine and milk without money and without price.
You who are without the word, come to the word. if you have not the Son of Man, break him and eat his body (meditate upon it). Buy heavenly and earthly grace without silver because no one is asking. This riddle uses three different meanings for buy.
2 Wherefore do ye spend money for that which is not bread? and your labour for that which satisfieth not? hearken diligently unto me, and eat ye that which is good, and let your soul delight itself in fatness.
Why do you spend money for that which is not the body of Christ? and your labor for that which is not fish (the word of God)? Listen to me and think on the Kingdom of Heaven (the good things coming Heb 10:1) and let your soul delight in the incarnate Son of God.
3 Incline your ear, and come unto me: hear, and your soul shall live; and I will make an everlasting covenant with you, even the sure mercies of David.
Hear my voice (though you don't understand) and come to me; and your soul shall live. and I will make an everlasting covenant with you , even the sure mercies of my beloived.
From this we discern that the sheep hear his voice, and come to him. But who hears the voice of God? The trumpet call? Don't all men hear the final revelation of God?
4 Behold, I have given him for a witness to the people, a leader and commander to the people
Christ was given to reveal the Father to the people, and make him a leader and commander. (He guides us in the flesh and spirit... he is Lord).
5 Behold, thou shalt call a nation that thou knowest not, and nations that knew not thee shall run unto thee because of the LORD thy God, and for the Holy One of Israel; for he hath glorified thee.
He shall call a people who is not the bride, and people who are not the bride shall be quicken in life in thee because of the Lord your God, and for Christ; for Christ has glorified you.
This is suggestive that there is a bride and those who are called who are not the bride. I don't understand it yet.
6 Seek ye the LORD while he may be found, call ye upon him while he is near:
Seek him ToDay.
7 Let the wicked forsake his way, and the unrighteous man his thoughts: and let him return unto the LORD, and he will have mercy upon him; and to our God, for he will abundantly pardon.
Prepare the way of the Lord by repentance, and return to the Lord, and he will have mercy upon him and abundantly pardon.
How does one 'return' to the Lord? It is implied that he was once with the Lord. When was this? Paul has correctly deduced from this an/or other such passages, that he was once alive without the law, and then the law came and he died.
Ro 7:9 For I was alive without the law once: but when the commandment came, sin revived, and I died.
Who returns to the Lord?
Ec 12:7 Then shall the dust return to the earth as it was: and the spirit shall return unto God who gave it.
This does not distinguish between good and bad spirits of men. The spirit of man SHALL return to the Lord.
8 For my thoughts are not your thoughts, neither are your ways my ways, saith the LORD.
For my purposes and works are not your purposes and works. He has made us gods of the earth, giving us what we want and allowing us to wallow in the pain and suffering we cause. (Ro 1:18ff) Our way is not the Lord's way.
9 For as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts.
For as the New Teaching of Peace is more exalted than the teachings of the world, so are my works and purposes more exalted.
10 For as the rain cometh down, and the snow from heaven, and returneth not thither, but watereth the earth, and maketh it bring forth and bud, that it may give seed to the sower, and bread to the eater:
For as the earthly and heavenly grace come down from heaven and are not retracted, but teaches the world and and is fruitful and multiplying, it gives children to Christ, and grace (the body of Christ) to the one who meditates upon it.
11 So shall my word be that goeth forth out of my mouth: it shall not return unto me void, but it shall accomplish that which I please, and it shall prosper in the thing whereto I sent it.
12 For ye shall go out with joy, and be led forth with peace: the mountains and the hills shall break forth before you into singing, and all the trees of the field shall clap their hands.
You shall go out with joy, and be led forth with peace (from the New Jerusalem, the new teaching of peace): the place you meet God will break forth in singing, and all the men of the harvest field will hang (put to death) their own works.
Isa 55:13 Instead of the thorn shall come up the fir tree, and instead of the brier shall come up the myrtle tree: and it shall be to the LORD for a name, for an everlasting sign [that] shall not be cut off.
Out of the cross shall come up the Son of God distinguished by his fruitfulness, and instead of the cares of the world shall come up the hearing of the Word completed in the spirit. And it shall become the reputation of the Lord that the fruit of the cross will remain.
Yeah, I know it sounds crazy. But I have replaced words with metaphor and replaced words with correlated ideas from other scripture. If you don't see the connections, I am happy to answer it.
Does Isa 55 teach eternal damnation? No. It has several hints of UR.