I agree with some things the author said, for instance the pre tribulation rapture, although there may be exceptions since with God nothing is impossible, i think every one is going to die.
1Cor 15:50
Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption.
1Cor 15
36
Thou fool, that which thou sowest is not quickened, except it die:
22
For as in Adam all die, even so in Christ shall all be made alive.
Verses 35 to 54 = 19 verses which explain the resurrection and in what manner.
Yet the believers in the rapture alive theory have i verse.
1 Thessalonians 4:13
The author also denied the theory of the Adventists and others but does not explain an alternative which i have no doubt would be hard to do.
Except Mary; you heretic!