G139 — hairesis
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
hairesis — pronounced hah'-ee-res-is
from 138; properly, a choice, i.e. (specially) a party or (abstractly) disunion:--heresy (which is the Greek word itself), sect. see GREEK for 138
9 occurrences in the KJV.
Acts 5:17
Then the high priest rose up, and all they that were with him, (which is the sect of the Sadducees,) and were filled with indignation,
Acts 15:5
But there rose up certain of the sect of the Pharisees which believed, saying, That it was needful to circumcise them, and to command them to keep the law of Moses.
Acts 24:5
For we have found this man a pestilent fellow, and a mover of sedition among all the Jews throughout the world, and a ringleader of the sect of the Nazarenes:
Acts 24:14
But this I confess unto thee, that after the way which they call heresy, so worship I the God of my fathers, believing all things which are written in the law and in the prophets:
Acts 26:5
Which knew me from the beginning, if they would testify, that after the most straitest sect of our religion I lived a Pharisee.
Acts 28:22
But we desire to hear of thee what thou thinkest: for as concerning this sect, we know that every where it is spoken against.
1 Corinthians 11:19
For there must be also heresies among you, that they which are approved may be made manifest among you.
Galatians 5:20
Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies,
2 Peter 2:1
But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies, even denying the Lord that bought them, and bring upon themselves swift destruction.