There are patterns in nature – the same spiral is found in sunflowers, galaxies and sea shells.
The pattern of the foot washing in John is the same as the pattern of the Gospel itself –
He Knew where he was from and where he was going
He Removed his garment
He put on a Towel to serve
Compare this to the Christ Hymn of Philippians 2, to the 1st chapter of John, to the stories of Jesus’ ministry in the Gospels and you see the same pattern.
The pattern in nature suggests a designer. The Pattern in the Gospel does more than suggest, but is a pattern that Jesus Followers should repeat in their lives.