the context of a cult must be formed from a Christian world view and there are basically two types.
Theological Cults like LDS, JW's, SDA, Unitarian, and Islam, and I think the RCC also.
those of extreme: Satanism, the family( Charles Manson), the people's temple (Jim Jones), and many others.
Some call anything a cult one disagrees with theologically, this is not the case. The word of God is clear we are to hold to the gospel that was preached to us of that The death, Burial, and Resurrection of the Lord Jesus Christ.
Anyone who denies's those foundational truths that: Jesus was born of a virgin, lived a sinless life, suffered a sinner punishment, died a physical death, and Risen on the Third day who IS God the second Person in the Trinity, anyone who denies this;
IS a spirit of antichrist. Anyone who teaches that the Lord Jesus is not the only way, the Only truth, and the only Life RUN as fast as you can and get into a Bible Believing Church that holds to these dearly.
Any church no matter if it is named Penacostel, Baptist, interdenominational, non-denominational, or independent. IF they teach that Jesus Christ is not the only way Run.
If they teach the bible contains the word of God over IT IS the word of God, run.
If they teach the devil and hell is a symbolic or metaphorical and not literal place of eternal punishment, RUN
IF they say to you "Thus saith the Lord " and it is not even verifiable by the very word of God, or you have not been prompted by the Holy Spirit it is not from God don't except it pray ask God and run.
If the church has become part of the Woke Movement and supports the LGBTQ and attack you because you call sin, sin as the Word Of God does, run.
IF you are in California and you are voting NOT to recall the Governor of California today and complain about the crime, homelessness, and fires and high cost of food and gas, and poor educational system, then move not to live under what you voted for, you are a coward and a snowflake.