The answer is: Feet, hands and head

John 13:9 - Spiritually, Peter wanted to be completely cleansed.

Right off the bat, this story from the Gospel of John is a striking display of humility and the depths of discipleship. When Jesus tells Peter that a foot wash is necessary for fellowship, Peter's instinct is to seek total cleansing, wanting to wash not just his feet but also his hands and head. This interaction reveals a profound theme – that understanding one's spiritual need often drives the desire for a more ample purification.

Interestingly, Peter does not merely want a rinse; he's wanting an overflowing sense of forgiveness and renewal. It spotlighted a real yearning within Peter to fully engage and be part of the transformative journey with Jesus. One might even see an echo of this idea within historical wash rituals found in other cultures, including ceremonies in the Jewish faith from where Jesus originates.

Let's not overlook the foundational symbolism of washing! It connects deeply with the overarching motifs throughout biblical texts emphasizing purity, servitude, and community ties -- aspects woven throughout the Prophet Isaiah and even earlier texts where washing shoes or feet often indicated welcoming guests.

Interesting side note: foot washing was typically the job of a servant, which elevates Jesus’ actions as a powerful statement. In foot washing, we glimpse the heart of servitude, showcasing that leadership in faith often comes from a genuinely humble place. When reflecting on rituals across linking texts of early Christian communities, mutual support and connection take center stage, reminding us of the integral value of maintaining relationships imbued with love and humility. How’s that for a lesson in unity?