"Jesus is indeed coming from heaven at the end of the age to consummate His plan and bring a new heaven and earth (Rev. 21)."
https://www.ligonier.org/learn/devotionals/the-ascension-of-christ
"Jesus used the phrase the end of the age to refer to that time in the future when the kingdom of God is established, true justice reigns, and the wicked are judged."
https://www.gotquestions.org/end-of-the-age.html
"Jesus referred to “the end of the age” as His return to this earth when the peoples of the world will be separated into two groups; those who will be thrown into the furnace of fire and those who will shine like the sun in the kingdom of their Father."
https://revelationbyjesuschrist.com/the-end/
"The Return, Second Coming, or Second Advent of Christ refers to the future return of Christ to earth at the end of the age. This return will be visible and physical as he comes from heaven on the clouds to bring final judgment and salvation."
https://www.thegospelcoalition.org/essay/the-return-of-christ/
"39The enemy who sowed them is the devil, the harvest is the end of the age, and the reapers are the angels. 40Therefore as the tares are gathered and burned in the fire, so it will be at the end of this age"
https://biblehub.com/nkjv/matthew/13.htm
"Daniel 12:2 says that at the end of the age, God will give a new body to those who have faith in Him. This is a reference to the resurrection of Jesus Christ. In the Bible, it is clear that we will all be resurrected and have a new body. This is a promise that God has made to us."
https://ministryanswers.com/christian-beliefs/where-in-the-bible-does-it-talk-about-getting-a-new-body/
"It’s true that at the end of this present age our souls and our bodies will be reunited, and we will be given new bodies — bodies like that of Christ after His resurrection which will never age or perish."
https://billygraham.org/answer/do-we-go-to-heaven-when-we-die-or-do-we-have-to-wait-until-jesus-returns-to-enter-heaven/
"The resurrection of the body will occur at the end of the age when Christ returns."
https://www.desiringgod.org/articles/do-we-receive-our-resurrection-bodies-when-we-die-or-at-the-end-of-the-age