The Psalms, the anthology of the hymns of Israel, are still used by Christians.
The prophets and the writers of the Psalms were clear that God was continuing to work in the universe and in all history. They declared that He had created the universe.
Religiously the Empire was pluralistic and marked by a search for a faith which would be satisfying intellectually and ethically and would give assurance of immortality.
Although when Christianity appeared the total population of the planet was only a fraction of that of the twentieth century, most of the earth's surface was quite outside the Mediterranean world, Persia, India, and China.
John the Baptist, who we are told was related by blood to Jesus, was preaching the impending judgement of God, urging repentance and moral reform, and baptizing in the Jordan River those who responded.
Hinduism's basic tenet is that many roads exist by which men have pursued and still pursue their quest for the truth and that none has universal validity.