Strong’s Greek
G1259 — diallasso
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
διαλλάσσομαι
diallasso — pronounced dee-al-las'-so
from 1223 and 236; to change thoroughly, i.e. (mentally) to conciliate:--reconcile. see GREEK for 1223 see GREEK for 236
1 occurrence in the KJV.
Matthew 5:24
Leave there thy gift before the altar, and go thy way; first be reconciled to thy brother, and then come and offer thy gift.