Hypocrisy

The crucifixion of Christ was not a gift, it was another appalling example of the barbaric nature of the Bible's authors: 

Torturing someone to death is immoral.
Punishing someone, especially killing them, for the crimes of another person is unjust.
Doing it for crimes that have not yet been committed, is psychotic.
Arbitrarily deciding that something is a crime, not because it's harmful to the person or to others, or because it infringes anyone's rights, but simply because it's your whim, is tyrannical.

God first punished mankind by banishing them from paradise, then later killed everyone with a Flood. When those still didn't work, instead of admitting his mistake and either changing the rules or once again using his great power to remake the world, God conceived himself (or His Son, depending on your theology), so that he could sacrifice himself, to himself, in order to appease himself, because his "perfect creation" broke his rules.
That is appalling behavior for a being that is the supposedly all-powerful, all-knowing and all-loving Creator of the universe and arbiter of morality. Instead of just admitting that he had made a mistake and either starting over or changing the rules, after punishing and then trying to kill all of humanity, he settled on human sacrifice as the final solution to his problems.

For that matter, at some point in the Bible, God is depicted as exhibiting every one of the 7 Deadly Sins:



Lust
Gluttony
Greed
Sloth
Wrath
Envy
Pride/Vanity

The first 2 Commandments alone cover over half of them:

1. I am the Lord your God, who brought you out of the land of Egypt, out of the house of bondage. (Pride) You shall have no other gods before me. (Greed)

2. You shall not make for yourself any carved image, or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth; you shall not bow down to them nor serve them. (Vanity) For I, the Lord your God, am a jealous God, (Envy) visiting the iniquity of the fathers on the children to the third and fourth generations of those who hate me, (Wrath) but showing mercy to thousands, to those who love Me and keep My commandments.

The Bible is a poor guide for morality. Yes, there are some positive attributes to the teachings found within its pages, but you must wade through centuries of ignorance, prejudice, racism, homophobia and misogyny to find them, and if you so happen to decide to ignore all of those other verses, regardless of your reason, then you are using your own moral intuition to decide what is right and wrong. That alone is proof that the Bible is unnecessary.

Human beings forgive each other all the time without torturing our children to death, because intelligent people are capable of understanding and appreciating the merit of simply being good people without the promise of eternal bliss and the threat of eternal torture.