What is the only thing each of us has to do? No, it is not paying taxes (you have a choice; I suppose you could choose to go to jail). The one, and only, thing each of us has to do is biologically die.
In today's reading, verses 27 and 28 say, "Just as man is destined to die once, and after that to face judgment, so Christ was sacrificed once to take away the sins of many people; ..." There is a lot of meaning in these verses - let's discuss this a bit.
Verses 27 and 28 contrast the death of human beings and the death of Christ. For Humans bodily death is unavoidable. We will all die some day. However, Christ volunteered to die. He sacrificed himself for us. He chose to die. God has appointed that physical, biological death will come to all of us - we have no chose.
Now this may sound depressing, but it is not. Christians, like other humans, know that biological death is certain, but they have nothing to fear from death. When a Christian dies, he or she has Jesus Christ as a mediator. Christians know that Jesus died so we will not have to die spiritually.
My final point is in regards to the term "once" - "... so Christ was sacrificed once to take away the sins ..." The word once is very important. It indicates the completeness and finality of Jesus' sacrifice. It means Jesus does not need to repeat this sacrifice as it was large enough to take away all of mankind's sins. It was a perfect sacrifice.
Be thankful my friends for the sacrifice of Jesus. When you take communion, please remember these words, "On the night he was handed over to suffering and death, our Lord Jesus Christ took bread; and when he had given thanks to you, he broke it, and gave it to his disciples, and said, "Take, eat: This is my Body, which is given for you. Do this for the remembrance of me." and be thankful.
Wishing you the best in your walk with Christ,