Mark June, absolutely. You're right, it's the timeline that God isn't revealing to us. The course sounds fantastic, I wish I wasn't working 40 - 50 hrs a week. Some interesting verses in the Bible:
https://www.openbible.info/topics/jesus_coming_back put that link in a browser.
examples in that link:
Revelation 1:7 ESV / 547 helpful votes
Behold, he is coming with the clouds, and every eye will see him, even those who pierced him, and all tribes of the earth will wail on account of him. Even so. Amen.
Matthew 24:36 ESV / 535 helpful votes
“But concerning that day and hour no one knows, not even the angels of heaven, nor the Son, but the Father only.
1 Thessalonians 4:16-17 ESV / 465 helpful votes
For the Lord himself will descend from heaven with a cry of command, with the voice of an archangel, and with the sound of the trumpet of God. And the dead in Christ will rise first. Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord.
Revelation 22:12-13 ESV / 367 helpful votes
“Behold, I am coming soon, bringing my recompense with me, to repay everyone for what he has done. I am the Alpha and the Omega, the first and the last, the beginning and the end.”
John 14:3 ESV / 346 helpful votes
And if I go and prepare a place for you, I will come again and will take you to myself, that where I am you may be also.
Matthew 24:31-33 ESV / 246 helpful votes
And he will send out his angels with a loud trumpet call, and they will gather his elect from the four winds, from one end of heaven to the other. “From the fig tree learn its lesson: as soon as its branch becomes tender and puts out its leaves, you know that summer is near. So also, when you see all these things, you know that he is near, at the very gates.
Revelation 1:8 ESV / 198 helpful votes
“I am the Alpha and the Omega,” says the Lord God, “who is and who was and who is to come, the Almighty.”
1 Corinthians 15:52 ESV / 187 helpful votes
In a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised imperishable, and we shall be changed.
Matthew 24:1-51 ESV / 182 helpful votes Helpful Not Helpful
Jesus left the temple and was going away, when his disciples came to point out to him the buildings of the temple. But he answered them, “You see all these, do you not? Truly, I say to you, there will not be left here one stone upon another that will not be thrown down.” As he sat on the Mount of Olives, the disciples came to him privately, saying, “Tell us, when will these things be, and what will be the sign of your coming and of the close of the age?” And Jesus answered them, “See that no one leads you astray. For many will come in my name, saying, ‘I am the Christ,’ and they will lead many astray. ...
Revelation 22:12 ESV / 175 helpful votes
“Behold, I am coming soon, bringing my recompense with me, to repay everyone for what he has done.
1 Thessalonians 4:17 ESV / 160 helpful votes
Then we who are alive, who are left, will be caught up together with them in the clouds to meet the Lord in the air, and so we will always be with the Lord.
and there are a lot more ........... sorry to be so long here ! But nooo I'm not. :-)