Why do we suffer and die?

Wherefore is light given to him that is in misery, and life unto the bitter in soul...Why died I not from the womb? why did I not give up the ghost when I came out of the belly? Job 3:11,20

Read the history of man's fall from grace and the consequences: Gen 3:1-24

Gen 3:4 And the serpent said unto the woman, Ye shall not surely die:

Gen 3:19 In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou art, and unto dust shalt thou return.

Jer 26:13 Therefore now amend your ways and your doings, and obey the voice of the LORD your God; and the LORD will repent him of the evil that he hath pronounced against you.

Rev 2:5 Remember therefore from whence thou art fallen, and repent, and do the first works; or else I will come unto thee quickly, and will remove thy candlestick out of his place, except thou repent.

Mat 4:17 From that time Jesus began to preach, and to say, Repent: for the kingdom of heaven is at hand.

Act 3:19 Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord;

Mar 16:16 - He that believeth - That is, believeth the gospel. “He who credits it to be true, and acts as if it were true.” This is the whole of faith. Man is a sinner. He should act on the belief of this truth and repent. There is a God. Man should believe it, and fear and love him, and seek his favor. The Lord Jesus died to save him. To have faith in him is to believe that this is true, and to act accordingly; that is, to trust him, to rely on him, to love him, to feel that we have no merit, and to cast our all upon him. There is a heaven and a hell. To believe this is to credit the account and act as if it were true - to seek the one and avoid the other. We are to die. To believe this is to act as if this were so; to be in readiness for it, and to expect it daily and hourly. In one word, faith is feeling and acting as if there were a God, a Saviour, a heaven, a hell; as if we were sinners and must die; as if we deserved eternal death and were in danger of it; and, in view of all, casting our eternal interests on the mercy of God in Christ Jesus. To do this is to be a Christian: not to do it is to be an infidel. (Barnes, eSword)

Rev 2:21 And I gave her space to repent of her fornication; and she repented not.

Rev 3:3 Remember therefore how thou hast received and heard, and hold fast, and repent. If therefore thou shalt not watch, I will come on thee as a thief, and thou shalt not know what hour I will come upon thee.

Rev 3:19-22 As many as I love, I rebuke and chasten: be zealous therefore, and repent. Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me. To him that overcometh will I grant to sit with me in my throne, even as I also overcame, and am set down with my Father in his throne. He that hath an ear, let him hear what the Spirit saith unto the churches.

CONCLUSION:

Rom 5:12 Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned:

Rom 5:13 (For until the law sin was in the world: but sin is not imputed when there is no law.

Rom 5:14 Nevertheless death reigned from Adam to Moses, even over them that had not sinned after the similitude of Adam's transgression, who is the figure of him that was to come.

Rom 5:15 But not as the offense, so also is the free gift. For if through the offense of one many be dead, much more the grace of God, and the gift by grace, which is by one man, Jesus Christ, hath abounded unto many.

Rom 5:16 And not as it was by one that sinned, so is the gift: for the judgment was by one to condemnation, but the free gift is of many offenses unto justification.

Rom 5:17 For if by one man's offense death reigned by one; much more they which receive abundance of grace and of the gift of righteousness shall reign in life by one, Jesus Christ.)

Rom 5:18 Therefore as by the offense of one judgment came upon all men to condemnation; even so by the righteousness of one the free gift came upon all men unto justification of life.

Rom 5:19 For as by one man's disobedience many were made sinners, so by the obedience of one shall many be made righteous.

Rom 16:27 To God only wise, be glory through Jesus Christ forever. Amen.