There have always been many Biblical names in use.
A lot of the names you wouldn't notice as being "Biblical" because they are so familiar, e.g. James, Felix, Luke, Jonathan, Ethan, Benjamin, Daniel, Nathan, Henry, Charles, Thomas, William, Lawrence, Richard, Naomi, Zoe, Sophia, Natalie, Sarah, Hannah, Catherine, Emma, Joy, Felicity, Ruth, Sylvia, Rachel, Rebecca.
I think choosing some of the more unusual Biblical names into use is part of the general trend of people wanting to think of less used names.