Bible Dictionary
IN THE LORD
“In the Lord” describes the believer’s union and fellowship with Jesus Christ. It marks the source, character, and sphere of Christian conduct, unity, service, and relationships.
Biblical Usage
The expression marks Christian duty, unity, fellowship, and brotherly greeting. It can qualify marriage, conduct, service, and relationships, and may function practically as “Christian” or “as a Christian.” It is closely related to “in Christ,” “in Christ Jesus,” and the Johannine language of abiding in Christ.