Considering the travel hazards, the motto might also imply that the vehicle carries blood offerings! (religion-online.org)
But all of the reporting on this recruitment points to Brown fishing for blue blood offers as the main reason he's uncommitted still. (sbnation.com)
If God as many would want us to believe is so obsessed with blood offering, then after the conversation with Cain, He (God) would have been very satisfied with the blood of Abel which Cain shed. (redeeminggod.com)