Come to think of it, the man of God has been the same since ancient times.

After thinking about it carefully, I found that immortals are the same since ancient times.

When you think about it carefully, the "temple gate" in "God and man are the same since ancient times" refers to the entrance to a religious or sacred place, and the "God and man" refers to people who are regarded as sacred or otherworldly. This sentence means to express a general understanding of immortals, that is, immortals have similar characteristics and attributes at any time.