Why do Christians interpret the Bible in different ways?

“How is it that truly born again Christians can read the Word of God and have a different understanding of some scriptures? An example would be pre tribulation and post tribulation rapture etc. Is it different levels of maturity or tradition that believers get hung up on? Also, it seems that the Holy Spirit would lead all in the same truths by conviction.” https://biblelineministries.org/q-39/