Video from drcraigvideos
"Reasonable Faith features the work of philosopher and theologian Dr. William Lane Craig and aims to provide in the public arena an intelligent, articulate, and uncompromising yet gracious Christian perspective on the most important issues concerning the truth of the Christian faith today." from video introduction
Cosmological arguments attempt to explain God’s existence using the concept of causality. Effects requires a cause, and everything we observe in the universe appears to be from an effect; therefore, there must be an underlying or primary cause of all things. These arguments typically come in two major types, known as the “horizontal” and “vertical” approaches. The most commonly used form is “horizontal,” also known as the kalam cosmological argument. According to the kalam, there can be only one itself-uncaused-and-eternal thing that causes all other things, and that first cause is God.
The term kalam is Arabic and means “eternal.” The earliest form of this particular argument was formulated by Islamic thinkers and later used by Christian philosophers such as the Scholastics. Like any logical argument, some scholars support it and others dismiss it. Unlike less-impactful approaches such as the ontological argument, the kalam remains among the more effective logical arguments for the existence of a Creator.
Below is a link to Reasonable Faith and a lengthy article by Dr. Craig on the Kalam Cosmological Argument.