Read Psalms 118:21&22  Our second verse also appears in Mark 12:10 where Jesus quoted it.  During His last week upon the earth, when Jesus taught the people in the Temple, the religious leaders were jealous of Him.  They wanted the people to like them, but they did not teach as good as Jesus taught.  This verse shows us a word picture of builders choosing the stones to put into the growing wall.  They would look at a hole and choose a stone that would fit.  But, the most important stone in the entire wall was the corner stone.  When the builders put the corner stone down, all of the other building stones had to fit up against the corner stone.  All of the wall stones had to line up with the corner stone so that the walls would be straight and tall.  Jesus, the person that the religious leaders didn't like, died for us and has become the main person in our salvation.  He is the most important person in our lives.  He is our corner stone that all of the other stones must line up with.