In one account, a newly freed O.J. Simpson tearfully promised his children he would never leave them again. In another, he warned his ex-wife days before her slaying that he would get her in trouble with the tax man, saying, "You're going to pay for this."

Contrasting portraits of Simpson emerged this week in two supermarket tabloids, one purportedly based on his ex-wife's secret diary and the other on a paid interview with the football legend.Nicole Brown Simpson's diary entries, which appeared in the National Enquirer, detail physical, sexual and emotional abuse inflicted by her ex-husband.

Nine days before her June 12, 1994, death, she wrote about a confrontation with Simpson and quoted him as saying: "You hang up on me last night, you're gonna pay for this b----." She wrote that he threatened to report her to the Internal Revenue Service for an alleged tax violation.

In an entry from 1988, when she was two months pregnant with Justin, she wrote that he said: "You're a fat pig. You're disgusting. You're a slob . . . I want you to have an abortion with the baby."

Nicole Simpson wrote that she begged to stay.

"Let me tell you how serious I am. I have a gun in my hand right now - get the (expletive) out of here," she quoted O.J. Simpson as saying.

Jurors who voted Oct. 3 to acquit O.J. Simpson of his ex-wife's slaying heard that he called her a "fat pig" when she was pregnant but not that he demanded an abortion or aimed a gun at her.

While prosecutors publicized that diary entry and several others relating to domestic violence, and called witnesses to testify that Simpson beat his wife, neither they nor the defense sought to introduce Nicole Simpson's diary as evidence.

In an interview with the Star, O.J. Simpson called his acquittal in the slayings of his ex-wife and her friend Ron Goldman a "miracle."

The Star also quoted a tearful O.J. Simpson as telling his son Justin, 7, and daughter Sydney, 9: "I promise I will never leave you like that again. . . . Don't worry, soon we will be home."

Nicole Simpson's diary entries were dated January 1988 to June 1994. The handwriting was authenticated by her father, Louis Brown.

Enquirer executive editor Steve Coz said the tabloid got the diary from someone "concerned about battered women's issues." He would not say if the paper paid for the diary.

Her diary is in possession of the court, said Sandi Gibbons, a spokeswoman for the district attorney's office. The family has a copy, and the prosecution and defense do also. Gibbons said she did not know if the diary filed with the court and the one quoted by the tabloid were the same.

Coz said the Enquirer would publish more diary excerpts in coming weeks.