Is the blood and water that flowed from Jesus' side an expression of Divine Mercy?

In John 19:34, it says: >“But one of the soldiers pierced His side with a spear, and immediately blood and water came out.” This moment has been interpreted in various ways throughout Christian history and theology. In some devotional contexts, particularly in Catholic and Orthodox traditions, the outpouring of blood and water from Christ’s side is seen as a profound symbol of Divine Mercy - often connected with the sacraments (e.g., Eucharist and Baptism) and the birth of the Church. My question is: **Is the blood and water that flowed from Jesus’ side traditionally understood as an expression of God’s mercy? If so, how is this understanding supported theologically or doctrinally within Christian traditions (e.g., Catholic, Orthodox, or Protestant perspectives)?**