Zechariah 14:4-5 is very clear that there will be an earthquake when Jesus returns. What we now know about plate technotices shows us this verse is true. The verse in Acts confirms that His feet will touch the ground. He does not return for us. He returns with us. Those that are Holy.
"On that day his feet will stand on the Mount of Olives, east of Jerusalem, and the Mount of Olives will be split in two from east to west, forming a great valley, with half of the mountain moving north and half moving south. You will flee by my mountain valley, for it will extend to Azel. You will flee as you fled from the earthquake in the days of Uzziah king of Judah. Then the Lord my God will come, and all the holy ones with him."
Yes, scripture speaks about an earthquake when Jesus plants His feet on the Mt of Olives, but what is more important are these scriptures below that teaches us when Christ will return, but we do not know the day or the hour, but to be prepared to be caught up to Him when He returns.
Mat 24:29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
Mat 24:30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
Mat 24:31 And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.
1Cor 15:50 Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption.
1Cor 15:51 Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed,
1Cor 15:52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.
1Cor 15:53 For this corruptible must put on incorruption, and this mortal must put on immortality.
1Cor 15:54 So when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory.
1Cor 15:55 O death, where is thy sting? O grave, where is thy victory?
1Cor 15:56 The sting of death is sin; and the strength of sin is the law.
1Cor 15:57 But thanks be to God, which giveth us the victory through our Lord Jesus Christ.
1Cor 15:58 Therefore, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord.
1Th 4:13 But I would not have you to be ignorant, brethren, concerning them which are asleep, that ye sorrow not, even as others which have no hope.
1Th 4:14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him.
1Th 4:15 For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep.
1Th 4:16 For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:
1Th 4:17 Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord.
1Th 4:18 Wherefore comfort one another with these words.