Supplementary observation in Jan 15, 1958 WT QFR:
(firstly, definition of providential: involving divine foresight or intervention.)
Their first act of intercourse that the Bible records was after their expulsion from Eden as sinners...
This proved to be very providential. It made it possible for all the offspring of Adam and Eve outside the garden of Eden to be redeemed by the one human sacrifice of the Lord Jesus Christ. It left no child or children born perfect inside the garden of Eden who did not need to be redeemed by Christ’s sacrifice,
So, my reading of this QFR is that it was God`s foresight or intervention that disallowed any children to have been born `perfect.``