According to recent research by pastor Ryan Burge of eight major Protestant denominations, only the Assemblies of God has seen a steady increase in church membership since 1987. Each of the others, mostly denominations that are fully progressive theologically and culturally, are experiencing steady decline. 

Denominations like The Episcopal Church, Evangelical Lutheran Church in America, and the Presbyterian Church (USA) began long ago to move away from orthodoxy and capitulate to new ideas about sex, gender, and marriage. On the other hand, the Assemblies of God (AG) remained committed to orthodoxy on matters of Scriptural authority, the Deity of Christ, the Resurrection, and on sexual matters. It supports the protection of life at all stages, marriage between one man and one woman, and it insists that the body determines identity as male and female. 

Christians are constantly pressured, within the Church and without, to evolve on these issues or, we are told, we will die out. It seems however, that biblical orthodoxy draws people in. Maybe because it provides an anchor in confusing times.