The cosmological arguments for God's existence are predicated on the first principles of ontology, i.e., the fundamental facts of existence per the imperatives of logic. Many fail to appreciate the intermediate premises of these arguments, particularly those of the KCA. The following includes my own sub-premises for the first premise and my summary argument for the conclusion: The Kalam Cosmological Argument (Horizontal Argument) 1. That which begins to exist must have a cause of its existence. 1.1. Something exists. 1.2. Existence from nonexistence is absurd. 1.3. Something has always existed. 2. The universe began to exist. Argument based on the impossibility of an actual infinite. 2.11. An actual infinite cannot exist. 2.12. An infinite temporal regress of events is an actual infinite. 2.13. Therefore, an infinite temporal regress of events cannot exist. AND Argument based on the impossibility of the formation of an actual infinite by successive addition. 2.21. A collection formed by successive addition cannot be actually infinite. 2.22. The temporal series of past events is a collection formed by successive addition. 2.23. Therefore, the temporal series of past events cannot be actually infinite. 3. The universe has a cause of its existence. 3.1. If the cause of the universe's existence were impersonal, it would be operationally mechanical. 3.2. An operationally mechanical cause would be a material existent. 3.3. The causal conditions for the effect of an operationally mechanical cause would be given from eternity. 3.4. But a material existent is a contingent entity of continuous change and causality! 3.5. An infinite temporal series of past causal events cannot be traversed to the present. 3.6. Indeed, an actual infinite cannot exist. 3.7. Hence, a temporal existent cannot have a beginningless past. 3.8. Hence, time began to exist. 3.9. A material existent is a temporal existent. 3.10. Hence, materiality began to exist. 3.11. The universe is a material existent. 3.12. Hence, the universe began to exist. 3.13. Hence, the cause of the universe's existence cannot be material (per 3.10.). 3.14. Hence, the cause of the universe's existence cannot be operationally mechanical (per 3.2., 3.10.). 3.15. Hence, the eternally self-subsistent cause of the universe's existence is wholly transcendent: timeless, immaterial and immutable (3.13.). 3.16. The only kind of timeless entity that could cause the beginning of time sans any external, predetermining causal conditions would be a personal agent of free will (per 3.3., 3.14.). 3.17. Hence, the eternally self-subsistent cause of the universe's existence is a personal agent of free will. The Vertical Cosmological Argument If something exists, there must exist what it takes for that thing to exist. The universe—the collection of beings in space and time—exists. Therefore, there must exist what it takes for the universe to exist. What it takes for the universe to exist cannot exist within the universe or be bounded by space and time. Therefore, what it takes for the universe to exist must transcend both space and time.