נָחַשׁ

From LSJ

ἕτερος ἐξ ἑτέρου σοφός τό τε πάλαι τό τε νῦν → one gets his skill from another, now as in days of old

Source

English (Strong)

a primitive root; properly, to hiss, i.e. whisper a (magic) spell; generally, to prognosticate: X certainly, divine, enchanter, (use) X enchantment, learn by experience, X indeed, diligently observe.