Why is the doctrine of the Antichrist important for Christians?

The concept of the Antichrist, as discussed in the New Testament, serves as a warning to believers. In 1 John 2:18, it is noted that many Antichrists have come, indicating that false teachings and spiritual opposition to Christ abound. This understanding emphasizes the importance of discernment in the Church, as many may claim to follow Christ while promoting doctrines that are fundamentally opposed to His truth. Recognizing the spirit of Antichrist thus motivates Christians to cling to sound doctrine and safeguard their faith against misleading teachings and ideologies.