Jordan divides the Sea of Galilee into two
Daniel 10:6 נחשת קלל
polished brass
The Greek for polished brass is χαλκός ἐρυθρός and thus קלל = ἐρυθρός and קלל resembles Γαλιλαία cf. קלל ים "red sea/sea of red".
In Numbers 34:11 there is ים כנרות ת sea of Chinnereth, this is a freshwater lake not sea i.e Luke 5:1 λίμνη "lake".
ים סוף is perhaps construct i.e Sea of Red compare with Sea of Chinnereth or Galilee.
1 Kings 9:11 Land of Galilee
Mark 6:53 Land of Gennesaret
Deuteronomy 1:1 Land of Suph?
Deu 1:1 beyond the
Jordan in the wilderness, in the Arabah over against
Suph
Suph is mentioned here without yam (sea) and reads בערבה מול סוף i.e ἐν ἐρήμῳ πρὸς ἐρυθρόν/σχοῖνον "In the desert towards red/the place where rushes grow.
Strabo, Geography 2.16.17
largest of which is the Jordan, which water a country fertile and productive of all things. It contains also a lake, which produces the aromatic rush and reed. In it are also marshes. The name of the lake is Gennesaritis. It produces also balsamum
In accordance to this description, ים סוף/Sea of reeds is another name for lake Gennesaritis.
Isaiah 9:6 reeds and flags קנה וסוף .
A reed is called קנה/κενός because of its hollow stem
κενός > חלה > αὐλός flute (hollow instrument)
κενός > חלה > ἄρτος bread (hollow loaf)
κενός > קנה ~ σχοῖνος