(This is the first post in this forum, so bear with me in case I derp.)
Little self-intro: My name's Zach. Been a born-again Christian believer since early 2002. I've read most, but not all, of the Bible... So I recommend not just blindly taking my word about the Bible, but investigate for yourself as well! The following is my opinion and might not necessarily be true... Though I did study it, prayed about it, and have thought about it a lot, so I feel confident giving an answer!
Will Jesus come back to Earth?
Short answer: yes.
Longer answer: We can look at Acts 1:6-11. These verses describe Jesus' leaving Earth and ascending to Heaven. Verses 10 and 11 say, "And while they were gazing into heaven as he went, behold, two men stood by them in white robes, and said, 'Men of Galilee, why do you stand looking into heaven? This Jesus, who was taken up from you into heaven, will come in the same way as you saw him go into heaven.'”
The vast majority of Bible scholars agree that these two men in white robes are angels declaring truth about Jesus. So since they speak the truth, that means Jesus will come back!
Now it's helpful when there's more than one place the Bible mentions something... So here's a few (out of many) other places in the Bible that mention Jesus coming back: 1 Thessalonians 4:16-17; Revelation 1:7, Revelation 22:12-13, John 14:3, and Revelation 1:8.