Blood is a life force. Blood is amazing. Without blood we wouldn't be human.
Thank you God for giving us blood. Thank you for sending your Son to be a human with blood rushing through Him. Thank you Jesus for your everlasting sacrifice on the cross. It was your blood, Jesus, that gave us life. You gave you blood so we may have eternity in heaven.
I am simply repaying the favor by giving my blood to save others who need it.