JC Ryle in Growth:
The names and offices of Christ, as laid down in Scripture, appear to me to show unmistakably that this communion between the saint and his Savior is not a mere fancy, but a real true thing. Between the Bridegroom and His bride, between the Head and His members, between the Physician and His patients, between the Advocate and His clients, between the Shepherd and His sheep, between the Master and His scholars, there is evidently implied a habit of familiar communion, of daily application for things needed, of daily pouring out and unburdening our hearts and minds. Such a habit of dealing with Christ is clearly something more than a vague general trust in the work that Christ did for sinners. It is getting close to Him and laying hold on Him with confidence, as a loving, personal Friend. This is what I mean by communion.