Justice is the need in a society to repay one for a wrong committed against them. It can be the system of punishing one for breaking a law of society, or it can mean that a person got what was coming to them when they committed a wrong
When Jesus said,"Suffer little children,and forbid them not,to come up to me,"He was reaching out to a segment of society that was thought to be insignificant . Childern,in their weakness and vulnerability,have much to teach us as adults.As we grow,the hardness of the world often makes our hearts callous.