Note:  Do not rely on this information. It is very old.

Da Capo

Da Capo (Ital. from the beginning), in Music, is printed at the end of the second part of an air with two parts, to signify that the first part must be repeated as a conclusion. Another form of it is Dal Segno (from the sign).

“Jesus replied: "Love the Lord your God with all your heart and with all your soul and with all your mind." This is the first and greatest commandment. And the second is like it: "Love your neighbor as yourself."”
Matthew 22:37-39