The ones who had been sent were from the Pharisees.

 So Nathanael came; and Jesus could see into his heart. "Here," said Jesus, "is a genuine Israelite, a man in whose heart there is no guile." That was a tribute that any devout Israelite would recognize. "Blessed is the man," said the Psalmist, "to whom the Lord imputes no iniquity, and in whose spirit there is no deceit" ( Psalms 32:2). "He had done no violence," said the prophet of the Servant of the Lord "and there was no deceit in his mouth" ( Isaiah 53:9). 