The Scofield Bible Commentary, by Cyrus Ingerson Scofield, [1917], at sacred-texts.com
Romans Chapter 12
mercies
That is, The "mercies" described in (Rom 3:22); (Rom 8:39).
service
(Greek, "latreia", translated "divine service"). (Heb 9:1).
grace
Grace (imparted). (Rom 12:3); (Rom 12:6); (Rom 15:15); (Rom 6:1); (Pe2 3:18).
dissimulation
Hypocrisy.