Harry Redknapp fought back tears in court as he fiercely denied telling his tax evasion trial "a pack of lies".
The football boss shouted from the witness box at prosecutor John Black QC: "You think I put my hand on the bible and told lies? That's an insult, Mr Black, that's an insult."
Bespectacled Redknapp shook his head as Mr Black ended his cross-examination at Southwark Crown Court, in London, by saying: "I suggest you have been telling the court a pack of lies."
With a voice trembling with emotion, Redknapp replied: "Everything I have told you is the truth, the whole truth and nothing but the truth, so help me God."
Both Redknapp, 64, and co-defendant Milan Mandaric, 73, deny two counts of cheating the public revenue through "bungs" worth £189,000 in a Monaco bank account, the Press Association reported.
Redknapp said he was willing to swear again on the bible as he completed his evidence by saying: "I am not a liar."
He said: "I'm the most ungreedy person you have ever met in your whole life, ever."
Redknapp earlier admitted misleading a News of the World reporter because it was the "easy way out".
He also asked Mr Black "are we that stupid?" after it was suggested Redknapp had "let the cat out of the bag".
"Do you think me and Mr (Milan) Mandaric are going to have completely different stories," Redknapp said. "Are we that stupid?"
Redknapp said: "Sometimes I may say the wrong words but I do not do it purposely."
He said the payments were "one million percent not my bonus" and the account "was so far from my mind it was unbelievable".
He said he did not tell his accountant about it because "I had nothing to tell him, there was nothing in it".
Redknapp said he had paid £8m in taxes "so why are we going to bother?".
"I only asked Mr Mandaric once about the account - the away win at Blackburn (in 2004)," Redknapp said.
"He said 'Disaster, Harry' - I didn't ask again."
Redknapp said the account was no secret.
"I told all the boys at Portsmouth about it, I told Quest [the 2006 investigation into English football led by Lord Stevens] about it, that's how secret it was.
"As far as I was concerned, it was the most unimportant thing in my life, that account."
Redknapp also told a court he "plucked the wrong figure" out of the air as he was questioned by Premier League bung investigators.
Redknapp denied prosecution claims he "desperately" tried to cover up allegations the £189,000 Monaco payments were bonuses for transfer profits.
But he said he gave sports journalist Rob Beasley the wrong information to prevent a story appearing in the Sunday tabloid as Spurs were due to take on Manchester United in the 2009 League Cup final.
Redknapp said: "I don't have to tell Mr Beasley the truth. I have to tell police the truth, not Mr Beasley, he's a News of the World reporter."
When asked why he referred to payments as bonuses he was due for the sale of Peter Crouch from Portsmouth to Aston Villa, Redknapp added: "I wanted to make the point to Mr Beasley that it was paid by my chairman."
He added: "I just want to get Mr Beasley out the way - I just didn't want a story in the paper.... I was going to come down to breakfast and all my players were going to be looking at the back page of the News of the World. It was going to be embarrassing."
When asked again why he had offered a "false story" to Mr Beasley, Redknapp, wearing tortoiseshell glasses and a navy blue suit, added: "I just want to get him off my back. This is the easy way out for me before a Cup Final."
The payments were linked to Crouch "in my mind", Redknapp added.
"In my mind it was always related to Crouch even though it wasn't connected. I felt morally I was due that money even though legally I wasn't."
Tape recordings of Redknapp talking to Mr Beasley were played in court.
Mr Black focused on Redknapp saying "Well, what did he give it to me for then?" when Mr Beasley said Mandaric claimed the payments were an investment, not a bonus.
When Mr Black asked earlier if he was "desperately trying to hide" that it was a bonus, Redknapp replied: "Absolutely not."
Redknapp said earlier that neither he nor Mandaric was "silly" enough to dodge tax.
Mandaric, he said, presided over "two billion US dollars companies - we're not talking about a skint member [of the public]".
Redknapp said he raised the Monaco account once because "I didn't want to embarrass him basically that he had made a loss, a bad investment".
Mandaric was said to have told Redknapp his investments were a disaster.
Redknapp said "if it had been my money, I might have cried but it wasn't my money".