Being alive on this earth does not mean that we have life: this is only a lifetime. “For ye are dead, and your life is hid with Christ in God” (Colossians 3:2–3).
Now, therefore, “as the only way to get the things that are eternal is through Jesus Christ who died for us; for this purpose then we should live unto him and not unto ourselves” (2 Corinthians 5:15).
“For since by man came death, by man came also the resurrection of the dead. For as in Adam all die, even so in Christ shall all be made alive” (1 Corinthians 15:21–22).