There is a Christianity which is definitely one of many world religions. Does the current NWO pope strike you as being a Christian? Or is he a blasphemous satanic substitute? The faith of Christ's apostles is the original faith of Christ, which was being corrupted even in their day. This is something of what it means to defend THE Gospel as it is laid out in the NT. To understand the OT better, it is first necessary to understand Christ as openly revealed in the NT, so that you can more easily find Christ, who is described in a somewhat more hidden manner, in the OT. The entire Bible is God's one true revelation of Christ and describes the only way of salvation that Christ provided. ALL of Christ's sheep are eternally saved because it is based upon Christ's finished work alone, without any contribution of man whatsoever.