《I Swear》的歌詞如下：
I Swear (我發誓)
I'll always be there for you
寶貝，我永遠都會在你身旁
Every single day of my life
日日夜夜，分分秒秒
I'll give you all that I can see
我會把我所看見的一切都給你
Just close your eyes and imagine
只要你閉上眼睛好好想一想
No need for fancy stuff or jewelry
無需那些花里胡哨的東西或是珠寶
I just want to be with you beside me, always
我只想你一直在我的身旁，一直，一直
Chorus: (All 4 One)
I swear, I swear, I swear I'm telling you the truth (x2)
我發誓，我對你的每句話都是真的，真的，真的
Verse 2: (Sean Kingston)
Sometimes, the pressure is really heavy
有時候，壓力真的好大好重
But you know that I won't let it show
但是你要知道，我絕不會讓這種事浮出表面
But when I'm with you, it's different, girl
但是和你在一起的時候就不一樣了，寶貝
You make me feel like I can do anything at all (x2)
你讓我覺得我能做任何事，任何事
Chorus: (All 4 One)
I swear, I swear, I swear I'm telling you the truth (x2)
我發誓，我對你的每句話都是真的，真的，真的
Outro: (All 4 One)
If you believe, then I believe too (x2)
如果你相信我就會相信你（x2）
Baby, I swear upon the love that I'm giving you (x2)
寶貝，我對著我對你的愛發誓（x2）