In Luke 21 Jesus speaks of the signs of His return. These are not limited to His return on the Last Day, but they have been displayed ever since Jesus’ day, and continue to be today. Case in point: this morning there was a lunar eclipse, and “some observers say they saw the mood take on a reddish hue,” as weather.com noted. This certainly fits with Luke 21:25–
And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring…
Also Revelation 6:12-13 comes to mind:
I watched as he opened the sixth seal. There was a great earthquake. The sun turned black like sackcloth made of goat hair, the whole moon turned blood red, 13 and the stars in the sky fell to earth, as late figs drop from a fig tree when shaken by a strong wind.
Let no one say they never knew when He returns! The signs have been visible all along, if you have eyes to see. He truly is coming back, and blessed are they which have their clothes with them and are ready when He returns!