<p>3:12&nbsp;<i>They have all turned aside, they are together become unprofitable</i>- although quoting still from Ps. 14:1-3, the idea is very similar to &ldquo;we like sheep have gone astray&rdquo; (Is. 53:6). We sin because of our group mentality, the influence of others is so strong upon us, we sin because we are sheep who follow the rest of the flock rather than stand alone against sin. Peer pressure is simply far stronger than we can ever imagine. In the context, Paul is reading &ldquo;all&rdquo; and &ldquo;together&rdquo; as meaning that both Jew and Gentile have alike gone astray, united and undivided in their joint sinfulness, no matter how they may culturally differ in the flesh.</p><p><i>There is none that does good, no, not so much as one</i>- The Greek word essentially means profitable, useful. The contrast is with how we are all become &ldquo;unprofitable&rdquo;- none is profitable to God. It&rsquo;s not that nobody ever does any good deed; rather the idea is that we are like the vine tree, not useful of ourselves to God (Ez. 15:2-6) unless He justifies us and makes us useful in His service.</p>