In Paul’s epistles, he offered an account of cause and effect, and an integrated system of sovereignty, authority, laws, sanctions, and succession. Paul rejected some of the Mosaic Laws, and preached that Jews and Gentiles were equal and would both inherit the kingdom of heaven.

In Peter’s first epistle, he reminded all Christians of their inheritance reserved in heaven. Peter told people to submit to authorities, only if they weren’t forcing you to deny Christ. Peter also described spiritual progression as attaining faith, virtue, knowledge, temperance, patience, godliness, kindness, and charity. Peter knew that his death was coming and prophesied his end. Warning about false prophets and teachers, Peter said that judgment for sinners was coming. 

In James’s epistle, he stated that temptations will test our faith, but faith will produce patience to help fight these temptations. He advised not to rely on wealth because it will not protect you. James also proclaimed that faith without works and repentance is dead, and that a man’s tongue is his worst enemy. 

The New Testament states many times that the Church will never be completely defeated, and to always have faith that God will prevail. It is also written that Christians will be persecuted for Christ’s sake and will be hated by all non-believers.