Cheap grace wants Christianity without personal sacrifice and self-denial.  We expect fire to fall on a partial sacrifice and an incomplete surrender.  Imperfect and incomplete sacrifices are an insult to the God who gave us His all.  Ours must be a complete sacrifice in response to His (Rom 12:1-2).  We must not keep back a portion of ourself for ourself.  Surrender it all.  Release everything.  With such sacrifices the Father is well pleased. 

 Peter said, “Ananias, why has Satan filled your heart to lie to the Holy Spirit and to keep back some of the price of the land?” Acts 5:3 (NASB)