The apostolic instruction in 1 Peter 3:15-16 is to revere Christ as Lord in our hearts, always being ready to provide an apologetic for what we believe, with gentleness and respect, that Christ might be glorified through our pattern of life.
Since the beginning of church history, Christians were called to give an apologia to anyone who might ask us why we believe what we believe. This biblical mandate is found in 1 Peter 3:15.
The gradual process of secularization, that is to say, the purging of religion from public life, is nothing but a farce, for culture is inevitably religious, the reflection of a people who are inescapably religious by nature.