One of my favorite images from the Bible passages is the "Road to Emmaus".
After the resurrection of our Lord Jesus Christ, two disciples were on the way to Emmaus (= bath water). Then Jesus appeared and joined them in their conversation.
Luke 24 (KJV) "And their eyes were opened, and they knew him; and he vanished out of their sight. And they said one to another, Did not our heart burn within us, while he talked with us by the way, and while he opened to us the scriptures? "
The two disciples' hearts burned within them as they were shown the secrets of the Bible from Jesus!
After Jesus ascended, he sent us the Holy Spirit to dwell inside of us. Then, it makes sense to ask the Holy Spirit to teach us when we read the Bible. When the Holy Spirit opens our eyes, we see Jesus. When we read the Bible just as a regular book, nothing burns inside us because we don't really get to know Him. But when the Holy Spirit shows us something in the Bible personally, then something inside burns. This is available to all of us who want to have it.
The passage says
"...while he opened to us the scriptures?"Which scriptures?
Luke 24:27 "... beginning at Moses and all the prophets, he expounded unto them in all the scriptures the things concerning himself."
No one has ever said to me clearly, but I always believed that when the authors of the NT encourage us to read the scriptures, they must have meant the Old Testament because they were the beginning of the New Testament, and the NT part of the Bible was not available.
The New Testament portion of the Bible is not contained in the book-form. The ending of the book of Acts still continues...still now. F.B. Meyer said something very interesting!
The division of the narrative is indicated in the enumeration of the widening concentric circles of v.8: Jerusalem, chapters 1-7; Judea and Samaria, 8:1-12; the uttermost parts of the earth, v.13 and onward to the end of the book, which has no formal termination, because the Acts of the Holy Spirit by the Church have continued throughout the Christian centuries and are not yet finished. There are some illustrious chapters still to be added by the pen of the angel scribes before the divine program is finished.
- quoted from F.B. Meyer Bible Commentary by Tyndale
May our hearts burn within us! Dear Holy Spirit, please teach us more!