The lives of the Prophets, their calls to their nations, and their actual practices as related to us in the Qur'an are examples for the believers to follow. Furthermore, the Qur'an contains signs for the future and some mysteries upon which the believers must reflect. Such is the case with Surat al-Kahf, one of its suras. Prophet Muhammad (saas) and many Muslim scholars have pointed out Surat al-Kahf for this reason. The Qur'an's account of the Companions of the Cave (Ashab al-Kahf) and Ar-Raqim, Prophet Musa's (as) experiences with Khidhr (as) (the person of knowledge), and the account of Dhu'l-Qarnayn (as) contain many secrets and expressions hinting at the End Times. Many prophetic hadiths connect Surat al-Kahf with the End Times. In one of them, our Prophet (saas) said: "Whoever enters his (the Dajjal's) Hell, let him seek refuge with Allah and recite the opening verse of Surat al-Kahf, and it will become cool and peaceful for him, as the fire became cool and peaceful for Abraham." (Ibn Kathir) Surat al-Kahf contains the signs required for the believers' defense and fight against the Dajjal and the irreligious movements bringing so much evil to humanity, which he wants to spread around the world, as well as many lessons from which the Muslims can learn. Our Prophet's (saas) recommendation to memorize and read this sura attentively is a clear indication of this. The purpose of this book is to make readers ponder and meditate upon Surat al-Kahf, which contains very important signs for today, in order to gain insight into these secrets and to abide by the Prophets' (saas) advice. Attentive readers will see that this sura bears the signs of the End Times, a time near the Hour, during which the practices of systems of unbelief and falsehood become widespread and Allah sends forth the truth to destroy them. By Allah's will, this time is very near, so much so that it has become crucial for people to reflect upon this matter. Thus, Muslims must ponder Surat al-Kahf carefully, bear its verses in mind, and analyze each verse in light of the Qur'an's other verses.