Witnessing to Roman Catholics (Catholicism) Part 18

Eternal Security: Mortal and Venial Sins. Roman Catholic imaginary separation of sins that worthy and not worthy of hell, respectively. How were people saved in the Old Testament if Baptism is a requirement for salvation?

References: Catechism of the Catholic Church (CCC) 1415-1416; The council of Florence. Vs Mark 2:7; James 2:10; 1 Jn 3:4; Rom 3:23; Matt 22:36-38