Revelation 14:4 These are they which were not defiled with women; for they are virgins. These are they which follow the Lamb whithersoever he goeth. These were redeemed from among men, being the firstfruits unto God and to the Lamb. 5 And in their mouth was found no guile: for they are without fault before the throne of God.
[The Faith I Live By pp 182, par 1] And many of them that sleep in the dust of the earth shall awake, some to everlasting life, some to shame, and everlasting contempt. It is at midnight that God manifests His power for the deliverance of His people. In the midst of the angry heavens is one clear space of indescribable glory, whence comes the voice of God like the sound of many waters, saying, “It is done.”
That voice shakes the heavens and the earth. There is a mighty earthquake, “such as was not since men were upon the earth, so mighty an earthquake, and so great.” The whole earth heaves and swells like the waves of the sea. Its surface is breaking up. Graves are opened, and “many of them that sleep in the dust of the earth ... awake, some to everlasting life, and some to shame and everlasting contempt.” All who have died in the faith of the third angel's message come forth from the tomb glorified, to hear God's covenant of peace with those who have kept His law.
“Those who had died in faith under the third angel's message, keeping the Sabbath, came forth from their dusty beds.” Again, there is nothing in the Bible, neither in the characteristics of history to suggest that the 144,000 is a figurative number. John saw two distinct groups, one, in which he heard the specific number, and the other group which could not be counted.
1st Thessalonians 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. 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.
May God add His blessing to the study of His word. “Good night” and God bless!