Q. 1. What is the meaning of the expression "Lex Orandi, Lex Credento, Lex Vivendi?"

A. 1. "Lex Orandi, Lex Credento, Lex Vivendi" is an ancient saying. Part of it, “Lex Orandi, Lex Credendi” means “As we pray, so we believe”. The second part “Lex Credendi, Lex Vivendi” means “As we believe so we live” came later in history."

"Lex orandi, lex credendi (Latin loosely translated as "the law of praying [is] the law of believing") is a motto in Christian tradition, which means that it is prayer which leads to belief, or that it is liturgy which leads to theology."

"It refers to the relationship between worship and belief, and is an ancient Christian principle which provided a measure for developing the ancient Christian creeds, the canon of scripture and other doctrinal matters based on the prayer texts of the Church, that is, the Church's liturgy. In the Early Church, there was liturgical tradition before there was a common creed and before there was an officially sanctioned biblical canon. These liturgical traditions provided the theological framework for establishing the creeds and canon." [Source: https://en.wikipedia.org]

In summary, "Lex Orandi, Lex Credendi, Lex Vivendi" means "as we Worship, so we Believe, so we Live."