I'm writing a Theology of the Body work, and was wondering where the song’s phrase, "Stay With Me" by Taizé Community comes from in the bible.

Is this too powerful of an image for young people, and parents when contemplating consumer relationships of the fallout of the sexual revolution (I'm thinking I would only pull this card out only around easter time other than in the paper/book):
knowing that our partner will be there when we're unable to help ourselves
Matthew 26:36-46, Taizé Community: Stay With Me