Ian asked:
And when every eye will see Him what will 10 billion people around the earth see?
John replied:
They will see the Risen Christ in all His glory as portrayed in Rev. 1.
Will we/they all see his risen human physical body in the same size & shape - all-glorious?
Will 10 billion people see that same physical body - all in the same moment?
1 Cor. 15:50 Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; nor does corruption inherit incorruption. 51 Behold, I tell you a mystery: We shall not all sleep, but we shall all be changed— 52 in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised incorruptible, and we shall be changed. 53 For this corruptible must put on incorruption, and this mortal must put on immortality. 54 So when this corruptible has put on incorruption, and this mortal has put on immortality, then shall be brought to pass the saying that is written: “Death is swallowed up in victory.”
I am happy to leave this as a glorious mystery. We shouldn't provoke Paul's rebuke:
35 But someone will say, “How are the dead raised up? And with what body do they come?” 36 Foolish one, what you sow is not made alive unless it dies. 37 And what you sow, you do not sow that body that shall be, but mere grain—perhaps wheat or some other grain. 38 But God gives it a body as He pleases, and to each seed its own body.