my name is chris lyford.e'll be right back. ♪ [ music ] [music] ♪ and i can't change, even if i tried even if i wanted to. my love my love my love she keeps me warm, she keeps me warm, she keeps me warm, she keeps me warm, she keeps me warm, she keeps me warm, ♪ we are neighbors and best friends. i love my sister. my heart doesn't see race. love is love. our family is no less than any other family. >>> welcome back to mosaic. father john and i are going through some of the basic catholic teachings essential to our faith and we've gone through quite a few at a rapid face pace and we are doing pretty well but the next segment we are going to talk about marriage as an institution covenant and sackment. >> the covenant is marriage is an image of christ loving the church so christ the head of the church loving the church, his body and that's imaged in the love of a man and woman. and that love of a man and woman is supposed to remind us of a love of christ for his church. and it is also a--an agreement, a sort of