Origen

(in Joan. tom. vi. c. 13) The questions of the priests and Levites being answered, another mission comes from the Pharisees: And they that were sent were of the Pharisees. So far as it is allowable to form a conjecture from the discourse itself here, I should say that it was the third occasion of John’s giving his witness. Observe the mildness of the former question, so befitting the priestly and levitical character, Who art thou? There is nothing arrogant or disrespectful, but only what becomes true ministers of God. The Pharisees however, being a sectarian body, as their name implies, address the Baptist in an importunate and contumelious way. And they said, Why baptizest thou then, if thou be not that Christ, neither Elias, neither that Prophet? not caring about information, but only wishing to prevent him baptizing. Yet the very next thing they did, was to come to John’s baptism. The solution of this is, that they came not in faith, but hypocritically, because they feared the people.