Dispensationalism in some form is a reality, whether accepted or not. Right off, when we open our bibles we see there is the Old Testament and the New Testament. Both two covenant dispensations. One espousing the Law and one revealing the fullness of grace. And then we have the formation of the church in comparison to the nation of Israel in the Old Testament. In this age God is dealing primarily with the gentiles, rather than exclusively with the nation of Israel.
Salvation is also different from the Old covenant and the New covenant. The old required one to OBEY the law of Moses or be cut off from Israel and God. The New Covenant requires one to believe on the Lord Jesus Christ and be saved.Acts 16:31.
So yes, dispenstionalism is very prevalent in the bible. For dispensationalism is nothing more than rightly dividing God's plan with man.