Her teaching about Jesus making atonement in hell isn't her only aberration from orthodox Christianity, but it's certainly the most glaring. She writes:
"Jesus paid on the cross and went to hell in my place. Then as God had promised, on the third day Jesus rose from the dead. The scene in the spirit realm went something like this: God rose up from his throne and said to demon powers tormenting the sinless son of God, 'let him go.' Then the resurrection power of Almighty God went through hell and filled Jesus. On earth his grave where they had buried him was filled with light as the power of God filled his body. He was resurrected from the dead--the first born again man." (The Most Important Decision You'll Ever Make, by Joyce Meyer, second printing, May 1993, page 36)Yet Scripture teaches that Jesus declared "It is finished!" while He still hung on the cross (John 19:28-30). Some may interpret Ephesians 4:9 and 1 Peter 3:18-19 as Jesus descending into hell after His crucifixion, nothing even remotely suggests that demons tormented Him during that time. Yet Meyer teaches a very graphic account of Jesus' time, as this sample of her preaching demonstrates:
As dramatic and exciting as her narrative is, it has absolutely no Scriptural basis. The thought of God the Father pacing helplessly as the host of hell tramples the Lord constitutes sheer blasphemy, totally ignoring the fact that the Triune God maintained complete control during the entire crucifixion. Furthermore, in asserting that Jesus did not fully accomplish atonement until He suffered in hell, Meyer renders His shed blood insufficient payment for sin. Such an allegation repudiates the whole of Scripture.
Christian Apologetics and Resource Ministry (CARM) has an article which lists more of Joyce Meyer's false teachings. Make time to read the article and check out the documentation. You will, I believe, conclude that Beth Moore exercised incredibly poor judgment (at best) in affirming Meyers as a "mighty woman of God."