There is nothing in the Bible about the 1914 generation. Watchtower has added 1914 and 1919 to the gospel.
Depends upon how one interprets the Bible. Not everything in the Bible is clearly stated and defined. Much of the Bible is written in poetic language, literary device, allusions, implication, allegory, prophetic language, specially prophecy . Take for example the prophecy in Daniel foretelling his arrival in the first century. Obviously, God intended the ambiguous or equivocal language. “Let those who have ears listen.” and
“I publicly praise you, Father, Lord of heaven and earth, because you have hidden these things from the wise and intellectual ones and have revealed them to young children.
and
For this judgment I came into this world, that those not seeing might see and those seeing might become blind.”
So, God’s spirit is also a factor. Not saying that JW is right or wrong in their interpretations involving 1914 in this rebuttal to you, only bringing the point that interpretation and discernment is also needed.