in Christ, in Jesus, in the Lord, in him, in the Lord Jesus

Definition:

The phrase "in Christ" and related terms refer to the state or condition of being in relationship with Jesus Christ through faith in him.

Other related terms include "in Christ Jesus, in Jesus Christ, in the Lord Jesus, in the Lord Jesus Christ."
Possible meanings for the term "in Christ" could include "because you belong to Christ" or "through the relationship you have with Christ" or "based on your faith in Christ."
These related terms all have the same meaning of being in a state of believing in Jesus and being his disciple.
Note: Sometimes the word "in" belongs with the verb. For example, "share in Christ" means to "share in" the benefits that come from knowing Christ. To "glory in" Christ means to be glad and give praise to God for who Jesus is and what he has done. To "believe in" Christ means to trust him as Savior and know him.

Depending on the context, different ways to translate "in Christ" and "in the Lord" (and related phrases) could include:
- "who belong to Christ"
- "because you believe in Christ"
- "because Christ has saved us"
- "in service to the Lord"
- "relying on the Lord"
- "because of what the Lord has done."
People who "believe in" Christ or who "have faith in" Christ believe what Jesus taught and are trusting him to save them because of his sacrifice on the cross that paid the penalty for their sins. Some languages may have one word that translates verbs like "believe in" or "share in" or "trust in."