- Is it suitable for a divine person to be sent?
- Is mission eternal, or only temporal?
- In what sense is a divine person invisibly sent?
- Is it fitting that each person be sent?
- Are both the Son and the Holy Ghost invisibly sent?
- To whom is the invisible mission directed?
- The visible mission
- Does any person send Himself visibly or invisibly?
"It is because the contemporary alternatives seem so one-sided and are not more evidently solutions to the problems which Thomas faced, and partly solved, that we return to him and to the tradition of theology and philosophy in which his Summa Theologiae appears: theology as the science of the first principle and this as the total knowledge of reality in its unity." -- Wayne J. Hankey, God in Himself (Oxford University Press, 1987), p.159.