What does Christianity teach us in modern days?

First a quote

A 1994/95 survey of nearly 10,000 abortion patients showed 18% of women having abortions are born-again or Evangelical Christians. Many of these women are likely anti-choice. The survey also showed that Catholic women have an abortion rate 29% higher than Protestant women. A Planned Parenthood handbook on abortion notes that nearly half of all abortions are for women who describe themselves as born-again Christian, Evangelical Christian, or Catholic. - Joyce Arthur

If you like to get more into the pro-life/pro-choice debate, read what some medical doctors have to say here. Now an excerpt from Genesis

Then God said: Take your son Isaac, your only one, whom you love, and go to the land of Moriah. There offer him up as a burnt offering on one of the heights that I will point out to you. Genesis 22:2

When believers were asked if the same event would happen to their neighbour, what would they do? Many correctly pointed out that their neighbour would need help because of the psychological illusion of god talking to them and trying to kill his child. My question is how Christian can cope with such cognitive dissonance. When probed a little deeper, they argued that Abraham did not actually kill Issac. It was only god's temptation of Abraham's faith only. Christians ignored that trauma of Issac going through almost being killed by his father. There are also a lot of deeds that modern civilized person would not do. For example we don't stone a disobedient child.

If a man have a stubborn and rebellious son, which will not obey the voice of his father, or the voice of his mother, and that, when they have chastened him, will not hearken unto them: Then shall his father and his mother lay hold on him, and bring him out unto the elders of his city, and unto the gate of his place; And they shall say unto the elders of his city, This our son is stubborn and rebellious, he will not obey our voice; he is a glutton, and a drunkard. And all the men of his city shall stone him with stones, that he die: so shalt thou put evil away from among you; and all Israel shall hear, and fear. Deuteronomy 21:18-21

When confronted with this, many believers argue either one of the following two; (1) it only applies to the Jews, not them; or (2) it is in the old testament. Since Jesus, these laws are not abandoned. On the notion of human sacrifice, does Christianity condone human sacrifice? Many Christians would argue that Christianity does not. How how they deal with the following bible verse?

Then the Spirit of the LORD came upon Jephthah. He crossed Gilead and Manasseh, passed through Mizpah of Gilead, and from there he advanced against the Ammonites. And Jephthah made a vow to the LORD: "If you give the Ammonites into my hands, whatever comes out of the door of my house to meet me when I return in triumph from the Ammonites will be the Lord's, and I will sacrifice it as a burnt offering." Then Jephthah went over to fight the Ammonites, and the LORD gave them into his hands. He devastated twenty towns from Aroer to the vicinity of Minnith, as far as Abel Keramim. Thus Israel subdued Ammon. When Jephthah returned to his home in Mizpah, who should come out to meet him but his daughter, dancing to the sound of tambourines! She was an only child. Except for her he had neither son nor daughter. When he saw her, he tore his clothes and cried, "Oh! My daughter! You have made me miserable and wretched, because I have made a vow to the LORD that I cannot break." "My father," she replied, "you have given your word to the LORD. Do to me just as you promised, now that the LORD has avenged you of your enemies, the Ammonites. But grant me this one request," she said. "Give me two months to roam the hills and weep with my friends, because I will never marry." "You may go," he said. And he let her go for two months. She and the girls went into the hills and wept because she would never marry. After the two months, she returned to her father and he did to her as he had vowed. And she was a virgin. From this comes the Israelite custom that each year the young women of Israel go out for four days to commemorate the daughter of Jephthah the Gileadite. Judges 11:29-40

Many argued that the burnt offering of this unnamed girl is metaphorical. The girl actually ended up serving the lord in the temple. So there was no human sacrifice. Of course, we never knew if the first to meet Jephthah was not his daughter, but a lowly servant, what would have happened. But Christianity has a big human sacrifice all along - that is Jesus. In order to forgive, the Christian god demanded the sacrifice of the prefect. So the god became man - that's Jesus and offered himself killed. Of course, at the end, the story goes that Jesus was resurrected. Does that count as a human sacrifice noting that Jesus was also fully human and resurrected as god? The human part of Jesus was killed. All these come back to the first quote in this post. The biggest moral Christianity has taught modern believers is hypocrisy. What do you think?