The increased use of their hands by primates did much to develop inherent brain power, but they did not yet possess minds that could really be called human. 
These guardians of health of Prince’s staff sought to introduce handshaking in substitution for saliva exchange or blood drinking as a seal of personal friendship and as a token of group loyalty. 
¶ The Jewish ceremonial of washing hands
In the time of Jesus it was considered that eating with unwashed hands was a transgression of the law. They had come to regard eating with unwashed hands as commerce with a harlot. 
Muchos fariseos, especialmente los que estaban a favor de las enseñanzas de Jesús, sabían que sólo se lavaba las manos con fines higiénicos, y que detestaba estas prácticas puramente ceremoniales. 
Jesus healed a man with withered hand as a protest against enslaving religious practices, such as the Jewish Sabbath.