The second candle of Advent usually represents Love.
The hymn says:
Why did my Savior come to Earth
And to the humble go?
Why did he choose the lowly birth?
Because he loved me so.
He loved me so.
He loved me so!
He gave his precious life for me.
Because he loved me so.*
First John 3:1 says, “How great is the love of God that he has lavished on us that we should all be called his children.”
*from "Why Did My Savior Come to Earth" by J.G. Dailey