I don't know which Bible you are reading, but here's a lot of killing go on in the name of the Lord.
1 Samuel 15:2 This is what the Lord Almighty says: ‘I will punish the Amalekites for what they did to Israel when they waylaid them as they came up from Egypt. 3 Now go, attack the Amalekites and totally destroy[
a] all that belongs to them. Do not spare them; put to death men and women, children and infants, cattle and sheep, camels and donkeys.’”
Numbers 21:1 When the Canaanite king of Arad, who lived in the Negev, heard that Israel was coming along the road to Atharim, he attacked the Israelites and captured some of them. 2 Then Israel made this vow to the Lord: “If you will deliver these people into our hands, we will totally destroy[
a] their cities.” 3 The Lord listened to Israel’s plea and gave the Canaanites over to them. They completely destroyed them and their towns; so the place was named Hormah.
Numbers 31:1 The Lord said to Moses, 2 “Take vengeance on the Midianites for the Israelites... 3 So Moses said to the people, “Arm some of your men to go to war against the Midianites so that they may carry out the Lord’s vengeance on them... 7 They fought against Midian, as the Lord commanded Moses, and killed every man... 15 “Have you allowed all the women to live?” he asked them. 16 “They were the ones who followed Balaam’s advice and enticed the Israelites to be unfaithful to the Lord in the Peor incident, so that a plague struck the Lord’s people. 17 Now kill all the boys. And kill every woman who has slept with a man, 18 but save for yourselves every girl who has never slept with a man.
1 Kings 18:36 At the time of sacrifice, the prophet Elijah stepped forward and prayed: “Lord, the God of Abraham, Isaac and Israel, let it be known today that you are God in Israel and that I am your servant and have done all these things at your command. 37 Answer me, Lord, answer me, so these people will know that you, Lord, are God, and that you are turning their hearts back again.”
38 Then the fire of the Lord fell and burned up the sacrifice, the wood, the stones and the soil, and also licked up the water in the trench.
39 When all the people saw this, they fell prostrate and cried, “The Lord—he is God! The Lord—he is God!”
40 Then Elijah commanded them, “Seize the prophets of Baal. Don’t let anyone get away!” They seized them, and Elijah had them brought down to the Kishon Valley and slaughtered there.
All these people had their own religion and their own God's... But the God of Israel told his people that these were false Gods. And that justified that those people must be killed.
So, what do you do about those stories? The Bible clearly says that those religions were not from the one true God. But back then, there were
many Gods... How do Baha'is interpret and explain that?
In Ugarit, the gods were called '
ilhm (
elohim), or the children of El, a probable parallel to the the biblical "sons of God." The chief god, a progenitor of the universe, was El, also known as Elion (biblical
El Elyon), who was the father of the divinities. In the Urgaritic material, El is the consort of Ashera, who is described as the "mother of 70 gods."
In the Urgaritic Baal cycle, Baal, the god of storms and fertility, earns his position as the champion and ruler of the gods by defeating the tyrannical
Yam, the god of the sea, and later triumphing over
Mot, the god of death. Yam had been placed over the other gods by
El but ruled them tyrannically.
Asherah offered herself as a sacrifice if Yam will ease his grip on her children. He agreed, but Baal boldly declared that he will defeat Yam, despite Yam's being endorsed by El. With the aid of magical weapons given to him by the divine craftsman Kothar-wa-Khasis, Baal is victorious. However, the god of death and the underworld, Mot, soon lures Baal to his own death in the desert, spelling drought and ruin for the land. Baal's sister/wife
Anat retrieves his body and assaults Mot, ripping him to pieces and scattering his remains over the fields. El, meanwhile, has had a dream suggesting that Baal would be resurrected, which indeed takes place. However, Mot, too, had revived and mounted a new attack against Baal. After their titanic but indecisive battle, Mot finally bows before Baal, leaving Baal in possession of the land and the undisputed regent of the gods.