He is the One and Only, the First and Last, before and beyond time, which serves His purposes because He is eternal. Once He split history in two by coming as a baby boy, dying as the Ultimate Sacrifice and rising as the Firstborn of the new creation. BC became AD and humanity was forever changed, redeemed by the precious blood of the Lamb.
In the Old Testament, He appeared to Moses in a burning bush and Joshua as the Commander of Angelic Armies. After rising to reign over all, He poured out the Holy Spirit, a foretaste of glory divine, His presence abiding in all who believe.
Doctor Who might battle the imaginary forces of Daleks, Cybermen and Weeping Angels, but Jesus battles the demons of hell. Those little g-gods that Doc Who sometimes encounters and best – like Pan – might be easily outsmarted but are nothing compared to the horrors Christ overcame. Nothing and no-one could or will withstand the King of Kings, the sin-slayer and death-beater.