The Eerdmans Encyclopedia of Early Christian Art and Archaeology, Volumes 1–3
IdentityIndividual or group existence; individual or group distinction (real or imagined). Within the congeries of late antique societies there were multiple and multifarious identities based on a host of classification rubrics, including economy, education, ethnicity, gender, politics, religion, social
The Jonathan Edwards Encyclopedia
IdentityJonathan Edwards’s notion of identity is best understood in light of his doctrine of continuous creation, that is, that God continuously creates the world ex nihilo at each successive moment. Edwards’s understanding of continuous creation implies that created beings do not persist through time.
The Dictionary of the Bible and Ancient Media
Identity Identity refers to the distinctive characteristics belonging to an individual or shared by all members of a particular category/group. From an individual perspective, the core of identity is the categorization of the self into a particular role. From the group perspective, the core of identity
Key passages
2 Co 1:21–22

Now the one who establishes us together with you in Christ and who anoints us is God, who also sealed us and gave the down payment of the Spirit in our hearts.

Re 13:16–14:1

And he causes all people, the small and the great, and the rich and the poor, and the free and the slave, that they give them a mark on their right hand or on their forehead, and that no one was able to buy or to sell except the one who had the mark—the name of the beast or the number of his name. …