Let's get this where it belongs to be understood as it was intended.
Context:
Luke 20:34-38
Jesus replied, “The people of this age marry and are given in marriage.
But those who are considered worthy of taking part in the age to come
and in the resurrection from the dead will neither marry nor be given
in marriage, and they can no longer die; for they are like the angels.
They are God’s children, since they are children of the resurrection.
But in the account of the burning bush, even Moses showed that the
dead rise, for he calls the Lord ‘the God of Abraham, and the God of
Isaac, and the God of Jacob.’
He is not the God of the dead, but of the living, for to him all are alive.”
When it says He is not God of the dead?
That was speaking in reference to the deceased Abraham, Isaac, and Jacob who were just previously mentioned.
That meant?
Though physically dead at the time?
Abraham, Isaac, and Jacob were remaining fully alive to God!
They were in Paradise awaiting the resurrection of Christ!
He is the God of the Living!