Context: The use of the word "heresy" was given wide currency by Irenaeus in his 2nd century tract Contra Haereses (Against Heresies) to describe and discredit his opponents during the early centuries of the Christian community.[citation needed] He described the community's beliefs and doctrines as orthodox (from ὀρθός, orthos "straight" + δόξα, doxa "belief") and the Gnostics' teachings as heretical.[citation needed] He also pointed out the concept of apostolic succession to support his arguments.

Question: Who gave more exposure to the term heresy when attempting to descredit opponents during the early centuries of Christianity?
Answer: Irenaeus

Question: What term did Irenaeus use to describe the Christian community's ideologies?
Answer: orthodox

Question: What concept did Irenaeus cite to help support his arguments?
Answer: apostolic succession

Question: Who was the first person to use the word heresy?
Answer: Unanswerable

Question: What did Irenaeus write in the 200's?
Answer: Unanswerable

Question: Who wrote about their opponents in the 200's
Answer: Unanswerable

Question: Who used the word Orthodox to describe Gnostic teachings?
Answer: Unanswerable

Question: What succession was first pointed out by Irenaeus?
Answer: Unanswerable