Final answer:
In Christian theology, the last enemy that Christ will defeat is death, as stated in 1 Corinthians 15:26, indicating the belief in Jesus Christ's victory over death and promise of eternal life for believers.
Step-by-step explanation:
The question 'What is the last enemy that Christ will destroy?' is one pertaining to Christian theology, found within the context of the Bible. According to the Christian New Testament, the last enemy that Christ will defeat is death. In 1 Corinthians 15:26, it states, "The last enemy to be destroyed is death." This passage is often interpreted to mean that through Christ's resurrection, the power of death will ultimately be overcome, which is a core tenet of Christian eschatology. Thus, Christians believe that eternal life is made possible through Jesus Christ's conquest over death.