The arrangement of the different parts of the church placed those of least (liturgical) importance on the periphery leading progressively to the more important elements and to the High Altar. The volume of the church expands from an intimate height to a soaring hexagonal spire over the High Altar, and the amount of daylight increases in proportion to the liturgical significance of the space. The concept was that on entering the cathedral at the Baptistery the people would be reminded of their own baptism (and entry into the Church), and from their places in the Nave participate fully in the celebration of the liturgy at a maximum of 15 metres feet from the High Altar with no pillars or columns intervening. Every effort was to be made to ensure that the interior should be free from distraction in order to help the worshippers to focus their attention on the Gospel being proclaimed and the service of worship in the liturgy, with no windows in the sight-line of the Nave.