𝗔𝗟𝗟 4 𝗢𝗡𝗘 - 𝙄 𝙎𝙬𝙚𝙖𝙧 1994

Following the release of Montgomery's version, American male R&B pop group All-4-One recorded a cover version of "I Swear" with record producer David Foster for their eponymous 1994 debut album. The cover includes a lyric change: the original line from the second verse "And when there's silver in your hair" was replaced by "And when just the two of us are there".

Released on April 22, 1994, by Blitzz and Atlantic, All-4-One's version reached number one on numerous music charts, including the US Billboard Hot 100, where it remained for 11 consecutive weeks. The recording later ranked number 98 on Billboard's list of All-Time Top 100 Songs. In the United Kingdom, the All-4-One recording spent a total of 18 weeks on the UK Singles Chart, peaking at number two, where it stayed for seven consecutive weeks (held off the top spot by Wet Wet Wet's "Love Is All Around").

After their first album had finished going through the mastering process of recording, Doug Morris, president of Atlantic Records called the group for a meeting. He showed them the original "I Swear" country record, asking All-4-One to do a cover of it promising to bring David Foster in for production. Singer Jamie Jones of the group was most hesitant about releasing the song due to the genre crossover. The group finished the recording at Foster's Malibu home studio.

A music video was produced to promote the single. It portrays the members of All-4-One hanging out on a rooftop singing interspersed with scenes with a young woman walking on the sidewalk below. They go down to walk and talk with her as they implore her not to leave. Ultimately, she says goodbye to each member before boarding a departing bus.

All-4-One and John Michael Montgomery recorded an updated duet version of "I Swear" for the deluxe edition of All-4-One's 2015 album Twenty+. A music video for this duet version was released on May 9, 2016. In 2021, All-4-One recorded a remix of "I Swear" for a music video promoting Xbox All-Access, titled "It's All There". A clip of the All-4-One has also been used in Gain laundry detergent TV ads in the US since 2021.

All-4-One is an American male R&B and pop group best known for their hit singles "I Swear", "So Much in Love" and "I Can Love You Like That". The group is composed of Jamie Jones, Delious Kennedy, Alfred Nevarez, and Tony Borowiak, all from the Antelope Valley and Mojave, California areas.