Lets put it this way...

If i came up to you and offered you a chance to become immortal and have total immunity to all diseases on this planet, would you accept?

Now seeing how by chance there was vaccines that could eliminate aging I guarantee that millions if not billions will either buy the formula at a high price (multinational corporations) or find it anywhere they could possibly want.

The bible states that the mark is a CHOICE, and with the mark, you will have happiness and power beyond your wildest dreams, but if you don't accept the mark,you will suffer a great deal. Now, living forever, hence "immortality" is a very dire sin. As crazy as it sounds, no one is granted immortality on this earth, not even Jesus was. ("The wage for all sin is death" We all sin, so we all die, it's as simple as that). Immortality shows God that you rather spend forever on earth than in his kingdom. So, the vaccine which eliminates aging comes on the market, and available to everyone who wants it. Little do they know, that it would be extremely easy to plant any type of nano chip/mico chip inside them via vaccination without them knowing. Rather being with god and agreeing to spend eternal life with him, you just went against him and sold your soul to the government which is ran by the anti-Christ, a powerful political leader. Now that the chip is inside you, the gov't knows where you are and who you are, what you buy, sell, and trade. Now the going back to the part where you will suffer without the mark means that when this vaccine comes out, it will be for a good reason, perhaps bio terrorism, fast spreading disease, etc. The vaccine will cure you, make you last forever, and then ultimately damn you in the end.

You have a choice, accept the mark (vaccination) and avoid harm/death , and ultimately becoming damned Or... suffer through the most evil of times, and in the end join Gods grace in heaven.