The exhortation to “abide” has been frequently misunderstood, as though it were a special, mystical, and indefinable experience. But Jesus makes clear that it actually involves a number of concrete realities.
First, union with our Lord depends on His grace. Of course we are actively and personally united to Christ by faith (John 14:12)….
But faith itself is rooted in the activity of God. It is the Father who, as the divine Gardener, has grafted us into Christ. It is Christ, by His Word, who has cleansed us to fit us for union with Himself (15:3). All is sovereign, all is of grace.
Second, union with Christ means being obedient to Him. Abiding involves our response to the teaching of Jesus: “If you abide in Me, and My words abide in you …” (John 15:7a). Paul echoes this idea in Colossians 3:16, where he writes, “Let the word of Christ dwell in you richly,” a statement closely related to his parallel exhortation in Ephesians 5:18: “be filled with the Spirit.”