With any work, it was done by humans, and if it is not the Bible inspired by God, you need to weigh what you read by Scripture. Having said that, the Congregationalists came from England, and there have been a number of great and good preachers within their ranks, like G. Campbell Morgan, Moody, Lewis Sperry Chafer and those in Dallas Theological Seminary. These works are highly recommended for their scriptural value and premillennial point of view.