Jesus defined "Abiding in Christ" when He likened Himself to a grapevine and believers to its branches: "Abide in Me, and I in you. As the branch cannot bear fruit of itself, unless it abides in the vine, so neither can you, unless you abide in Me" (John 15:4). That picture illustrates the vital union existing between Christians and Jesus Christ, and we refer to our community as "Abide" to remind us of this union.
The word "abide" basically means "to remain." Every Christian remains inseparably linked to Christ in all areas of life. We depend on Him for grace and power to obey. We look obediently to His Word for instruction on how to live. We offer Him our deepest adoration and praise and we submit ourselves to His authority over our lives. In short, Christians gratefully know Jesus Christ is the source and sustainer of their lives.
To bear fruit simply means to grow in character — to become more like Christ and reflect the fruit of the Spirit (Galatians 5:22–23).
For more info, visit: GTY.org > What does it mean to abide in Christ?