17:18 philosophers. This is one of the only two specific references in the Bible to “philosophy,” the other being Colossians 2:8. Both have strongly negative emphases, warning against philosophy—that is, the love of human wisdom.
17:18 Stoicks. Like all other Greek and Roman philosophies of the day, Epicureanism and Stoicism were based on an evolutionary worldview. The Epicureans were essentially atheists, like modern Darwinists, whereas the Stoics were pantheists, much like modern New Age evolutionists. Both believed in an infinitely old space/time/matter universe, and both rejected the concept of an omnipotent transcendent Creator. On the popular level, both were expressed in terms of polytheism, astrology and spiritism, with the many gods and goddesses essentially being personifications of natural forces and systems. Both would naturally be strongly opposed to Biblical creationist Christianity.
17:21 some new thing. This proclivity of ancient intellectual philosophers is still characteristic of modern evolutionists, especially those espousing so-called New Age concepts.
17:22 Mars’ hill. Same as “Areopagus” in Acts 17:19. This hill near the Acropolis was probably used in Paul’s day by a council that formally evaluated new religious or moral philosophies. “Ares” was the Greek god of war, corresponding to “Mars” in Rome.
17:22 too superstitious. The Athenians were notorious for venerating a great number of gods and goddesses. What may have been religious to the Greeks was superstitious to Paul, since they attributed powers to these personified forces of nature which were only possessed by God.

