His own.

Since God did not spare even his own Son but gave him up for us all, won’t God, who gave us Christ, also give us everything else? 

Who dares accuse us whom God has chosen for his own? Will God? No! He is the one who has given us right standing with himself. Who then will condemn us? Will Christ Jesus? No, for he is the one who died for us and was raised to life for us and is sitting at the place of highest honor next to God, pleading for us. (Romans 8:32-34)