FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

summartureo συμμαρτυρέω — soom-mar-too-reh'-o — from 4862 and 3140; to testify jointly, i.e. corroborate by (concurrent) evidence:--testify unto, (also) bear witness (with).

see GREEK for 4862

see GREEK for 3140