Strong’s Greek
G1864 — epagonizomai
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἐπαγωνίζομαι
epagonizomai — pronounced ep-ag-o-nid'-zom-ahee
from 1909 and 75; to struggle for:--earnestly contend foreign see GREEK for 1909 see GREEK for 75
1 occurrence in the KJV.
Jude 1:3
Beloved, when I gave all diligence to write unto you of the common salvation, it was needful for me to write unto you, and exhort you that ye should earnestly contend for the faith which was once delivered unto the saints.