What is the basis for the Christadelphian belief that Satan is not a personal being? The Christadelphians teach that the devil/Satan is not a personal being but an analogy for describing sin.

What is their Biblical defense for such a theology?
The following paragraphs are copied from http://www.religioustolerance.org/chr_delp.htm which in turn cited the page titled &quot;What Christadelphians believe about the Devil&quot; at the Christadelphians's official website (http://www.christadelphian.org.uk/wcb/devil.html)

The Devil is not viewed by Christadelphians as a quasi-deity with magical powers who travels the Earth trying to lure people into sin --as is believed by most conservative Christian groups. Based on Genesis 6:5, Jeremiah 7:21-28, Matthew 15:19, James 1:13-15, and other passages, they stress that &quot;Temptation and hence sin, comes from inside the person, not outside.&quot; Satan is viewed as the principle of evil which resides in people and motivates them to sin and rebel against God.
They point out that the words &quot;devil&quot; does not appear in the Hebrew Scriptures (Old Testament). In the New Testament, these terms are sometimes used to translate the Greek word &quot;diabolos&quot; which  means a human slanderer or false accuser. Examples are John 6:70, 1 Timothy 3:11, 2 Timothy 3:1-3 and Titus 2:3.
&quot;Satan&quot; in Hebrew and &quot;satanas&quot; in Greek means an opponent or adversary. Examples are: Matthew 16:23 when Peter was considered an adversary because he opposed what Jesus wanted to do at the time. In Acts 5, Sapphira was an adversary.