“Hallelujah! Salvation and glory and power belong to our God, for true and just are his judgments.
He has condemned the great prostitute who corrupted the earth by her adulteries.
He has avenged on her the blood of his servants.” And again they shouted:
“Hallelujah! The smoke from her goes up for ever and ever.” Revelation 19:1-3
If by “think” you mean cognitive awareness and
rational reasoning? Yes.
In Revelation 19 we see a number of responses by the
multitude, God, angels, all of them thinking about the situation at hand and
responding to it.
We will have our full cognitive resources. God will
not erase our memories or remove the ability to freely choose.
Those who are in heaven got there because of their
minds and their choices. Why would that ability stop once we’ve arrived?
The only difference is our minds will no longer think
about sin, since all temptation will be gone.
We will think about God. We will be aware of him and our praise will
flow because we are remembering him and his deeds.
We will not be all-knowing. That is for God alone, but our thinking will
expand as we learn more and know more about God, his kingdom and others. Our thinking will expand.