When the first man Adam, created by God in His own image, disobeyed God, it broke the intimate relationship between God and Adam. Adam and all of his descendants, including you and I, lost our God-given nature and became naturally evil (sinful).

Genesis 1:27 So God created man in his [own] image, in the image of God created he him; male and female created he them.

Romans 3:23 For all have sinned, and come short of the glory of God;

Ephesians 2:3 Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others.

Because of our sin/rebellion, no matter how small or big, against God and His perfect design for us, we all deserve to die.

Romans 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:

God required the shedding of blood to cover actions of disobedience (sin/rebellion against Him).

Hebrews 9:22 And almost all things are by the law purged with blood; and without shedding of blood is no remission.

Leviticus 17:11 For the life of the flesh [is] in the blood: and I have given it to you upon the altar to make an atonement for your souls: for it [is] the blood [that] maketh an atonement for the soul.

Jesus Christ, left his place in heaven with Father God, became a human being, lived a perfect life as a human and always obeyed Father God.

John 6:38 For I came down from heaven, not to do mine own will, but the will of him that sent me.

Hebrews 5:8 Though he were a Son, yet learned he obedience by the things which he suffered; 9 And being made perfect, he became the author of eternal salvation unto all them that obey him;

Jesus was crucified on a cross and died in our place.  Since he did not sin in any way, he died for the sins of each one of us.  It is through him that we can enter back into relationship with Father God.

Acts 4:10 Be it known unto you all, and to all the people of Israel, that by the name of Jesus Christ of Nazareth, whom ye crucified, whom God raised from the dead, [even] by him doth this man stand here before you whole. 11 This is the stone which was set at nought of you builders, which is become the head of the corner. 12 Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.

1Timothy 2:5 For [there is] one God, and one mediator between God and men, the man Christ Jesus; 6 Who gave himself a ransom for all, to be testified in due time.

John 14:6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.

Hebrews 10:19 Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus,

Jesus became our example of living life by listening to what Father God wants us to do.

John 5:19 Then answered Jesus and said unto them, Verily, verily, I say unto you, The Son can do nothing of himself, but what he seeth the Father do: for what things soever he doeth, these also doeth the Son likewise.

John 5:30 I can of mine own self do nothing: as I hear, I judge: and my judgment is just; because I seek not mine own will, but the will of the Father which hath sent me.