Your dead shall live [O Lord]; the bodies of our dead [saints] shall rise. You who dwell in the dust, awake and sing for joy! For Your dew [O Lord] is a dew of [sparkling] light [heavenly, supernatural dew]; and the earth shall cast forth the dead [to life again; for on the land of the shades of the dead You will let Your dew fall] (Isaiah 26: 19). Resurrection unto life with YAHSHUA is the promise that rings eternally in the heart of all believer. Here the Prophet Isaiah assures the promise with words that connect to the words of our Lord when He said, I am the Resurrection and the Life. Whoever believes in Me, although he may die, yet he shall live; and whoever continues to live and believes in Me shall never die at all (John 11:25-24b). For the believer, death can only touch the physical part of the body. It has no power over the spirit. Life is in the spirit of the believer, although physical death has been ordained for men because of sin. Paul said, the body that is sown is perishable and decays, but [the body] that is resurrected is imperishable; it is sown in dishonor and humiliation it is raised in honor and glory. It is sown in infirmity and weakness it is resurrected in strength and endued with power. It is sown a natural body; it is raised a supernatural body. [as surely as] there is a physical body, there is also a spiritual body (Cor. 15:42-44). Paul referred YASHSUA as the first born from among the dead because He was the first to experience birth after death through His resurrection, so we will too. He will die no more. Many people experienced resurrection but had to die again. In the book of Revelation- the revelation of YAHSHUA the Messiah, John also referred to Him as the faithful and trustworthy Witness, the First-born of the dead… (Rev. 1: 5a). Because we were given the right to become the children of God by believing in His name, we owe our birth neither to bloods nor to the will of the flesh nor to the will of man, but to God [we are born of God] (John 1:12), even though we died physically, we shall live.
“For Your dew is a dew of light” That implies life coming from heaven in a supernatural dew. When YAHSHUA rose from the dead in the powerful resurrection power, the tombs were opened and many bodies of the saints who had fallen asleep in death were raised to life and coming out of the tombs after His resurrection they went into the holy city and appeared to many people (Matt. 28: 52-53). We know that these people were not resurrected in their glorified bodies, either to eternal life and like the rest who came to life, they died again. That was not the “heavenly, supernatural dew.” The impact of the resurrection of our Savior YAHSHUA- the author of Life, was so great and so powerful that caused life to enter into the lives of those saints. If they were recognizable, I presume they were saints who had died recently. I am just speculating, of course, for the Bible does not tell us whom they were.