Lyric discussion by notwithstanding 

Cover art for Dam Would Break lyrics by Toad the Wet Sprocket

well, Glen Phillips, Toad's lead singer/songwriter is a jewish born atheist, so, it's not a christian song

he's said before tat it's about when so much shit builds up on you that you just collapse underneath the weight of it all. he was very depressed and suicidal prior to writing and recording the bands final album "Coil", which this song appears on. so it's one of his dark struggle songs.