It is apparent to me that you do not know Greek or how translation works. Words to not have meaning of themselves alone. Meaning is always derived from context and many words have multiple meanings based on their context. This is true of Greek just as it is of any language. There is not only one word in Great that means eternal. Depending on the context, aion can mean an age or eternity. Just as the word "stud" can mean a male horse, a wooden beam in a wall, or a gifted athlete...depending on the context. The primary meaning of kolasis is punishment. Every Greek lexicon makes this very apparent. In some cases, it can be translated correction. Yet it is hardly ever translated this way, especially in Matt 25 where the context is clearly speaking of punishment, not restoration. For instance, kolasis is used 7 times in the Septuagint in our common OT books and 5 of those times it is translated "punishment" and another time it is translated "to harm." I looked at over 10 different lexicons and every single one has the primary meaning being punishment. Please provide one lexicon that gives the primary meaning of this word as "correction."
I'm not going to repeat myself on the Jonah text. Clearly you are not reading what I wrote so it will do no good to repeat it. I never said olam did not mean "forever." Sigh.
Digging,
I am open to hearing if you have a Scriptual reason for claiming there is some middle-ground or other option. However, I think Scripture is very clear on the matter. Yes, those who do not receive God's grace in Jesus Christ are eternally condemned. I think this is what the Bible teaches.
“See to it that no one fails to obtain the grace of God; that no “root of bitterness” springs up and causes trouble, and by it many become defiled; that no one is sexually immoral or unholy like Esau, who sold his birthright for a single meal. For you know that afterward, when he desired to inherit the blessing, he was rejected, for he found no chance to repent, though he sought it with tears.” (Hebrews 12:15–17, ESV)
“And Paul and Barnabas spoke out boldly, saying, “It was necessary that the word of God be spoken first to you. Since you thrust it aside and judge yourselves unworthy of eternal life, behold, we are turning to the Gentiles.” (Acts 13:46, ESV)
“For I am not ashamed of the gospel, for it is the power of God for salvation to everyone who believes, to the Jew first and also to the Greek.” (Romans 1:16, ESV)
““For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life. For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him. Whoever believes in him is not condemned, but whoever does not believe is condemned already, because he has not believed in the name of the only Son of God.” (John 3:16–18, ESV)
“Whoever believes in the Son has eternal life; whoever does not obey the Son shall not see life, but the wrath of God remains on him.” (John 3:36, ESV)
“but these are written so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name.” (John 20:31, ESV)