Strong's G4828 · Greek

συμμαρτυρέω

summartureo · soom-mar-too-reh'-o

from 4862 and 3140; to testify jointly, i.e. corroborate by (concurrent) evidence

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 3 * συν-μαρτυρέω (Rec. συμμ- ), -ῶ , to bear witness with : Ro 2:15 ; c. dat., Ro 8:16 ; seq. ὅτι , Ro 9:1 .† 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain