What is the logical contrast of eternal life? John 3:16 describes it as perishing, and Romans 6:23 as death, and 2 Thessalonians 1:9 as a fiery destruction issuing forth from the presence of the Lord, and Jude 7 and 2 Peter 2:6 as being reduced to ashes like Sodom and Gomorrah. The punishment is definitely eternal in Matthew 25:46, but it isn't eternal life in Hell. It's the second death promised by Jesus of body and soul.