"The last enemy that shall be destroyed is death." (1 Cor 15:6)

In the religious world sin is expected to be conquered during life. It is accomplished by the virtue of Christ. If this is true, then is death likewise something to be conquered in mortality, raising a telestial body to a terrestrial one?

If we do not conquer sin during our probation, it is said we will suffer eternal fire. Likewise, if we leave off conquering death in Christ until the next life in the resurrection, will we be satisfied being raised into another telestial kingdom?

Jesus committed no sin, and therefore was not worthy of death, and thus death could not hold him. The cause of death is sin. If Christ conquered sin, then by virtue of his sacrifice, if we are partakers, is not death also conquered?