Strong’s definition
to testify jointly, i.e. corroborate by (concurrent) evidence
KJV gloss list in the source
testify unto, (also) bear witness (with)
Derivation recorded by Strong
from G4862 (σύν) and G3140 (μαρτυρέω);
Explore the English glosses
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Contextual morphology & manuscript evidence
Every indexed source occurrence of G4828 →
The passage laboratory provides separately attributed Hebrew and Greek morphology and occurrence lists. Source-text boundaries and alternatives are displayed explicitly. The entry must not be used as an automatic verdict against the KJV.