ISB ~ John 19 v23

the tunic:A one-piece garment worn next to the skin.

• The seamless tunic of Christ recalls the linen vestment worn by the high priest of Israel (Lev 16:4), which was not to be torn (Lev 21:10) and which, according to the historian Josephus, was seamless. This implies that Christ acts as a high priest when he makes himself a sacrifice on the Cross (Heb 2:17; 9:11-14).

• Allegorically (St. Cyprian, The Unity of the Catholic Church 7): the seamless tunic signifies the indivisible kingdom of Christ. Although Solomon’s kingdom was rent asunder like a garment and its glory passed away (1 Kings 11:29-32), the Church of Christ is forever glorious and will always remain intact (Jn 19:24).