The function of the “resurrection” is to join a spirit being with a new indestructible physical body, similar (maybe exactly) to man’s body prior to sinning. It’s also true that believers and unbelievers will both receive a resurrected body (John 5:28, 29), but not both will have “eternal life” (John 10:27, 28) in their new bodies, which is the intention of “the second death.” If eternal life means an eternal relationship with God, then the absence of an eternal relationship with God means eternal death. So, I believe a question that may be adequate in addressing eternal life is, “when does a believer receive eternal life”? My understanding is that it is possessed at the time of rebirth, and if so, the phrase “loose eternal life” is not only an oxymoron (you can’t lose eternal life since it means life that is forever) but Scripture has no usages of such language or concept. May God guide all who reply to this post to His truths concerning it, and God Be Blessed!