This root form (lemma) is used in 2 different forms in the NT: συμπαθῆσαι (NAA····), συνεπαθήσατε (IAA2··P).
It is glossed in 2 different ways: ‘to sympathize’, ‘you_all sympathized’.
OET HEB 4:15 Greek word=συμπαθῆσαι (sumpathaʸsai) Morphology=NAA···· English gloss=‘to sympathize’ SR GNT HEB 4:15 word 7
OET HEB 10:34 Greek word=συνεπαθήσατε (sunepathaʸsate) Morphology=IAA2··P English gloss=‘you_all sympathized’ SR GNT HEB 10:34 word 7