Trump and his allies have suggested the texts are proof of a so-called deep state conspiracy against him, and that the Mueller probe is a politically motivated "witch hunt".
"At no time, in any of those texts, did those personal beliefs ever enter into the realm of any action I took", Strzok said. "It is not a hoax".
The "we'll stop it" text is considered Strzok's most controversial text message to have surfaced.
Page was subpoenaed to appear for a closed-door interview on Wednesday but defied the subpoena, saying she had not been given sufficient time to review the materials related to her testimony. Goodlatte told CNN that Page had agreed to appear Friday.
At another point, Gowdy demanded that Strzok explain why he had to leave Mueller's team previous year. Gowdy said, referring to one of the agents who showed up at Hillary Clinton's election party.
An FBI agent assailed as biased by Donald Trump after it emerged he railed against the president in private messages with his lover, said Thursday (Jul 12) such attacks are bolstering Russia's Vladimir Putin and tearing the United States apart.
The exchange between Gowdy - an outspoken Republican who rose to prominence over his handling of the congressional Benghazi hearings - and Strzok on Thursday ended with Strzok erupting into an impassioned monologue about how his personal texts did not interfere with any investigation, and blasting any attempt to use concerns about his texts to undermine confidence in the FBI.
One of those agents was Peter Strzok, the man who "oversaw the opening of the Russian Federation investigation".
Gowdy: "That is a fantastic answer to a question nobody asked".
Strzok told lawmakers in his opening statement that he followed department protocol handling sensitive information about the extent of Russia's meddling in the USA election and the Trump team's potential role in it.
Rep. Bob Goodlatte (R-Va.), the chairman of the House Judiciary Committee, threatened Strzok with contempt, claiming he was under subpoena. "This demand puts Mr. Strzok in an impossible position".
Democrats, led by Judiciary Committee ranking member Jerry Nadler, D-N.Y., attempted to throw a number of procedural roadblocks into the way of the majority's questions, including with a number of motions and "points of order" to slow the questioning.
Strzok is still in the hot seat due to lingering questions of whether his hatred of President Donald Trump tainted the integrity of his work with special counsel Robert Mueller and the Hillary Clinton investigations.
"Well then why did you get kicked off!"
But every person in the Federal Bureau of Investigation, "whatever their political beliefs, walks in the door and leaves those behind", Strzok said.
"I do not have bias", he continued, adding that he believed he was sacked not because his personal opinions impacted his work, but because the texts gave the "perception" of bias.
The Khans spoke at the 2016 Democratic National Convention to challenge Trump on comments he made on the campaign trail about restricting the entrance of Muslims into the country. "In terms of the text 'we will stop it, ' you need to understand that was written late at night, off the cuff and it was in response to a series of events that included then-candidate Trump insulting the immigrant family of a fallen war hero, and my presumption based on that terrible, disgusting behavior that the American population would not elect someone demonstrating that behavior to be president of the United States".
"Let me be clear, unequivocally and under oath: not once in my 26 years of defending my nation did my personal opinions impact any official action I took", he will say.