The World According to Renshi

About Renshi

Renshi Jim Zellner is a GoDan (5th degree black belt) in Ateru Goju Ryu Karate and a student of other martial arts including To Shin Do (Ninjutsu) and Toyama Ryu (Japanese Military Sword).

Additionally, after a lengthy career in sales and marketing management, Jim is a student at Winebrenner Theological Seminary in the Masters of Practical Theology program with plans to enter the doctoral program.

Additionally, Jim plays guitar and loves most music. He also enjoys nature and writes an occasional Haiku…

Jim is married to Kari Zellner and has 4 children (2+2 step children) and a total of 4 grandchildren.

Faith, Discipline, and Harmony

I’m Renshi Zellner, a servant of Christ, martial artist, and musician, sharing how faith shapes every strike, song, and step of life. Invite me to teach, mentor, or minister as we pursue strength, peace, and purpose together.

Contact Renshi

Reviews

A minimalist dojo altar scene: a small, natural wood shelf mounted on a smooth white wall, holding a simple wooden cross, a compact black leather Bible, and a neatly rolled martial arts belt in deep navy. Beneath, the polished wooden floor reflects a faint, softened outline of the objects. Gentle, diffused afternoon light filters in from the left, producing subtle gradients on the wall and delicate, elongated shadows from the cross. Composed at eye level with balanced symmetry and precise lines, the image favors photographic realism and a clean, professional aesthetic. The atmosphere is serene, disciplined, and reverent, visually expressing the integration of spiritual devotion and martial practice without visual clutter.

Aya Nakamura

Training under Renshi reshaped my discipline and faith; every class blends Scripture, technique, and encouragement in a way I carry into daily life.

A glossy, deep-mahogany drum resting on a wooden studio floor, its chrome hardware gleaming subtly, with a thin silver cross pendant delicately placed atop the drumhead. Nearby, a simple open journal with neat, handwritten lines lies angled toward the viewer, and a smooth, polished stone engraved with the word “Faith” sits on its corner. Overhead, soft, warm studio lighting creates a halo-like glow on the drum surface and gentle reflections on the metal rims. The background fades into a tasteful, dark blur, suggesting a music studio. Shot from a low, close perspective with shallow depth of field in photographic realism, the mood is contemplative yet creative, symbolizing the harmony of God, rhythm, and personal reflection.

Mateo García

Hearing Renshi minister through music and testimony reminded me that God meets us in battle, heartbreak, and victory with the same grace.