Please also check out these other links:
"Seven Dispensations Viewed in the Light of Scripture"
"Examining the pre-trib rapture: Israel and the Church"-
I wanted to quote couple of statements from this article:
"Another problem with this idea of God always working exclusively with either Israel or the church is it just doesn’t fit history. Most pretrib teachers would agree God dramatically established the New Covenant church at Pentecost. Most also agree that God judged unbelieving Israel through the destruction of Jerusalem. But Pentecost occurred sometime around 30 AD, and Jerusalem was destroyed in 70 AD. So some 40 years after the birth of the church age, God was still dealing with the people of Israel.
It gets worse. The events in the Middle East over the last 70 years certainly seem to reveal the powerful hand of God behind the scenes of history. I don’t know any pretrib pastor or teacher who would deny this. History has witnessed an ethnic people wander without a homeland for almost two millennia, maintain their distinct identity and culture, then return to and reclaim their ancient homeland, and even resurrect their ancient tongue as their everyday language. This is historically unprecedented! To see this as simply a natural occurrence and not involving strong divine providence strains credulity. Most pretrib teachers would not only agree, they share an excitement in watching developments unfold in the Middle East.
The problem for them is that this powerful, historical testimony to God working once again in the national affairs of Israel is happening before the rapture. These events are occurring during what is supposed to be the church age, when God only works with the church, not Israel. So this claim that God works exclusively with either Israel or the church simply doesn’t fit what God is actually doing in history.
Of course, the biggest problem with this idea is we don’t see this principle expressed anyplace in Scripture. There’s no passage that explains to us how God only works with Israel or the church, not both during the same period of time. The next time you hear someone teach this, I suggest asking them, “Exactly where is this principle taught in Scripture?” (end of quote)
Refer to the following meme- (http://www.evangelicaloutreach.org/osasdevil.gif).
Theologians have been treating the word of God (Scripture) like other literary work. If you take an English course, one of the things they teach you is how to write essays (in the format of writing concrete detail followed by your own commentary). Like I said before, Scripture doesn't need to be commented by theologians. Scripture explains itself and moreover, the Holy Ghost teaches us the right interpretation and whatever we need to know. What men interpret and teach by their reasoning can be lies. That is never the case with the Holy Ghost.
1 John 2:27 (NLT):
But you have received the Holy Spirit, and he lives within you, so you don’t need anyone to teach you what is true. For the Spirit teaches you everything you need to know, and what he teaches is true—it is not a lie. So just as he has taught you, remain in fellowship with Christ.
Regarding dispensationalism, where in Scripture does it explicitly state that the Bible is divided into different dispensations? Nowhere!
God nor any of the authors of the Bible have stated God has divided Biblical history into dispensations. Man has speculated and created such theories based on his own imagination (this is also known as giving one's own commentary/opinions). Demons have inspired men to divide the Bible in such ways in order to create and propagate their false doctrines (refer to 1 Timothy 4:1-2). The fruit of that is being seen as dispensationalism has been linked with antinomianism ( refer to "The Antinomian way of Justification").
Paul and Jude clearly addressed licentiousness and what it means to no longer under the Law (Law of Moses). Refer to my other post ("Who are no longer under condemnation to eternal damnation?") also. Eternal life is all about letting the life-giving Holy Ghost to free you from the power of sin (that leads to death) and thereby allow you to obey God instead (in other words, obedience to God is the key to eternal life, not abusing His grace and forgiveness into licentiousness).
Deuteronomy 30:19-20 (NLT):
“Today I have given you the choice between life and death, between blessings and curses. Now I call on heaven and earth to witness the choice you make. Oh, that you would choose life, so that you and your descendants might live! 20 You can make this choice by loving the Lord your God, obeying him, and committing yourself firmly to him. This is the key to your life. And if you love and obey the Lord, you will live long in the land the Lord swore to give your ancestors Abraham, Isaac, and Jacob.”
Romans 6:1-2,15-16,20-22 (NLT):
Well then, should we keep on sinning so that God can show us more and more of his wonderful grace? 2 Of course not! Since we have died to sin, how can we continue to live in it?
15 Well then, since God’s grace has set us free from the law, does that mean we can go on sinning? Of course not! 16 Don’t you realize that you become the slave of whatever you choose to obey? You can be a slave to sin, which leads to death, or you can choose to obey God, which leads to righteous living.
20 When you were slaves to sin, you were free from the obligation to do right. 21 And what was the result? You are now ashamed of the things you used to do, things that end in eternal doom. 22 But now you are free from the power of sin and have become slaves of God. Now you do those things that lead to holiness and result in eternal life.
Romans 8:2,6,12-14 (NLT):
And because you belong to him, the power of the life-giving Spirit has freed you from the power of sin that leads to death.
6 So letting your sinful nature control your mind leads to death. But letting the Spirit control your mind leads to life and peace.
12 Therefore, dear brothers and sisters, you have no obligation to do what your sinful nature urges you to do. 13 For if you live by its dictates, you will die. But if through the power of the Spirit you put to death the deeds of your sinful nature, you will live. 14 For all who are led by the Spirit of God are children of God.
Jude 1:4 (NLT):
I say this because some ungodly people have wormed their way into your churches, saying that God’s marvelous grace allows us to live immoral lives. The condemnation of such people was recorded long ago, for they have denied our only Master and Lord, Jesus Christ.