Verse 18

18. If there is the substantiation of the cause from the effect and the substantiation of the effect from the cause, which one of the two is produced first, whose substantiation is dependent upon the other?

In the cases of the cause from the effect ant the effect from the cause (of the Primal eternal Absolute) the cause from the effect lacks substantiality as described in verse 17. but if substantiality were granted then to which event would it be granted? Which event take take place first here, cause or effect? Both cases are unsubstantiated so neither can support the other. The crucial point here is the coming into being of eternity. Eternity cannot logically have a beginning. All of the above cases have tried to step back before a beginning, or step outside the universe clearly illogical and impossible.