Dispensationalism or rightly dividing scripture to the correct people and time period is crucial in understanding and correctly interpreting the Bible. We often confuse ourselves when we take verses that contradict Christian beliefs and apply them to ourselves, which results in wrong doctrine. Such contradictions can be easily avoided through the use of dispensationalism.
Some critics attribute dispensationalism to a series of mind games because of the complexity it adds to scripture. However, Isaiah 55 gives us insight as to why dispensationalism is needed to correctly interpret the Bible. Just like God’s ways are not akin to our own, neither are his thoughts similar to ours. When we do not rightly divide, we conform what the Bible says to fit our simple understanding and not to fully encompass God’s complex thoughts, which prevents us from receiving the correct interpretation of God’s words
Isaiah 55:8-9 For my thoughts are not your thoughts, neither are your ways my ways, saith the Lord. For as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts.
Many people have a hard time believing the general epistles are written for different people in different time periods: tribulation Jews and Christians. An example of such dispensational writings is the book of John, where John writes verses meant for the tribulation Jews and switches to Christians and then back to tribulation Jews. An explanation for this is found in Exodus 3:14 and in the fact that God is the original writer of the Bible. It makes sense when the intended audience switches from tribulation Jews to Christians and vice versa because this is how God operates, beyond our level of comprehension. 2 Peter 1:20 further assures us that it is God that speaks through various authors of the Bible through the Holy Spirit so we can trust scripture as it is written without additional interpretation.
Exodus 3:14 And God said unto Moses, I Am That I Am: and he said, Thus shalt thou say unto the children of Israel, I Am hath sent me unto you.
2 Peter 1:20 Knowing this first, that no prophecy of the scripture is of any private interpretation. For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.
It is sometimes assumed that the authors of the Bible understood what they were writing, which is not the case when looking at Daniel 12:8. More often than not, man does not completely understand the words spoken by God. Even the disciples of Jesus did not completely understand Christian doctrine nor the apostles the writings of Paul. Evens so, the authors of the Bible understood and wrote it to the best of their ability with guidance from the Holy Spirit.
Daniel 12:8 And I heard, but I understood not: then said I, O? my Lord, what shall be the end of these things
2 Peter 3:15-16 And account that the longsuffering of our Lord is salvation; even as our beloved brother Paul also according to the wisdom given unto him hath written unto you; As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction.