Hey again!
Regarding the mark going in the right hand, I believe that it is Satan's jab at God, because the "right hand" is Gods' place of honor. It appears throughout scripture such as, the Lord ascending to the right hand of the Father, the seven stars being held in the Lord's right hand, regarding the sheep and the goats, the sheep are placed at his right hand, etc.
Psa 16:8 I have set the LORD always before me: because he is at my right hand, I shall not be moved.
Psa 109:31 For he shall stand at the right hand of the poor, to save him from those that condemn his soul.
Act 2:25 For David speaketh concerning him, I foresaw the Lord always before my face, for he is on my right hand, that I should not be moved.
That is true,for God's right hand represents authority,which God is at the right hand of the saints,for He is their authority,and protector.
Rev 22:3 And there shall be no more curse: but the throne of God and of the Lamb shall be in it; and his servants shall serve him:
Rev 22:4 And they shall see his face; and his name shall be in their foreheads.
Rev 7:3 Saying, Hurt not the earth, neither the sea, nor the trees, till we have sealed the servants of our God in their foreheads.
Rev 9:4 And it was commanded them that they should not hurt the grass of the earth, neither any green thing, neither any tree; but only those men which have not the seal of God in their foreheads.
Rev 14:1 And I looked, and, lo, a Lamb stood on the mount Sion, and with him an hundred forty and four thousand, having his Father's name written in their foreheads.
The forehead represents God's authority of the saints.
Rev 13:16 And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads.
It would appear as if the mark being put in the right hand,or forehead,is that the beast is their authority,for if they do not have a right hand,they sure have a forehead,but I do not know if it is a decision they have,or it is right hand first,and if they do not have a right hand,then forehead.
When they receive the mark in their right hand,or forehead,they are giving their authority to the beast,and it seals them,and they cannot repent of it afterwards,and salvation cannot be given to them,so it is the end,and God can then put the world down,for repentance,and salvation,is no longer available to the world,for it cannot be reversed to have God as their authority,for they gave the beast the place of authority.