How do we distinguish between true and false prophets?

According to 1 John 4:1-3, believers are instructed to test the spirits to determine whether they are from God. True prophets will acknowledge the incarnation of Christ—that Jesus came in the flesh. This confession is essential because it affirms the truth of the gospel and Christ's redemptive work. Conversely, any spirit or teaching that denies this fundamental truth is regarded as not from God and is characterized as the spirit of Antichrist. Thus, the significant distinction lies in this acknowledgment and the accompanying proclamation of grace as the means of salvation.