In this passage, Jesus is speaking to His disciples about the signs of the end times. He refers to a prophecy from the book of Daniel, which mentions an 'abomination that causes desolation.' This term historically referred to events where sacred spaces were desecrated, such as when Antiochus IV Epiphanes desecrated the Jewish temple. Jesus uses this reference to warn of future events that will be similarly troubling and significant.
The instruction to 'let the reader understand' suggests that this prophecy requires discernment and wisdom to interpret. It implies that these events will be clear to those who are spiritually vigilant and knowledgeable about the scriptures. This serves as a reminder for believers to be prepared and to stay faithful, even in times of trial. By understanding these signs, Christians are encouraged to remain steadfast in their faith and to trust in God's ultimate plan, despite the challenges that may arise.