Why do some people deny the existence of God? (Only Atheists)

Yes. God has accepted slavery. But what kind of slavery? I have no idea how slavery is in Christianity. But I tell you about the rights of slaves in Islam. I'll post a comment for your second argument. 1. The sense of brotherhood Islam has created a notion that both master and slave were brothers, one to the other, by inculcating an awareness that all men were created by the same God and were the children of the same parents,"O mankind, indeed We have created you from male and female and made you peoples and tribes that you may know one another. Indeed, the most noble of you in the sight of Allah is the most righteous of you. Indeed, Allah is Knowing and Acquainted." (Quran 49:13) God has cut apart the very root of all forms of narrow mindedness that arose out of the feelings of superior birth. The prophet had taught that righteousness wasn't measured on the basis of color, race or wealth, but on the basis of God-fearing alone. "The Arab has no superiority over the non-Arab or the non-Arab over the Arab; the white over the black or the black over the white except in the matter of God-fearing." Where slaves are mentioned, God remarked that "You are of one another." (4:25) He makes it clear that both master and slave are brothers and that it is circumstances alone which force slavery upon some people. 2. An awareness concerning the rights of the slave The slave was a mere commodity item in all ancient societies. His lot was confined to duties alone. His obligation was simply to strive for an increase in the comforts and luxury enjoyed by the master and in this regard, there was to be no compromise whatsoever. It was a paramount necessity that the slave was in good shape in order to be able to work for his master. The slaves were housed in yards which sufficed to accommodate not even the cattle and other livestock. As for the clothes that they were provided with, they were sufficient not even to cover their nakedness. Islam brought about a transformation in the situation. It taught that slave had rights as well. The prophet said:"They are your brothers and relatives. Let each one provide for the brother under him with the food that he himself eats and with the clothes that he himself wears. Place not upon them any task that is overbearing for them. If you do assign them a difficult task, you must help them in its execution." The duty of the slave, in primitive societies, was never confined to mere labour. He was also doomed to be at the receiving end of his master"s sadistic pleasure-seekings. To be always ready to kill and to be killed for the sake of his master"s pleasure. God ordered that such a state of affairs must change. It instructed in the humane and proper treatment of the slaves." Worship Allah and associate nothing with Him, and to parents do good,"and to relatives, orphans, the needy, ..., the companion at your side, the traveler, and those whom your right hands possess. Indeed, Allah does not like those who are self-deluding and boastful." (4:36) The prophet said:"If anyone kills a slave, we shall kill him. If anyone maims a slave, we shall maim him as well. If anyone castrates his slave, we shall castrate him." From being the choice commodity for the master"s choicest desire, the slave was being transformed into a being with his very own personality and rights. It was in a society in which existed the heinous practice of castrating slaves that the prophet had, in the most unambiguous terms, declared that the master who castrates his slave will, in turn, "be castrated by us." The slaves were castrated in order that their sexual impulses be destroyed, whereby, they could then be made to work like animals. Islam, which prohibited this practice, particularly instructs that means should be made available for the satisfaction of the sexual instincts of the slave also. "Marry those among you who are single, and the virtuous ones among your slaves, male or female: if they are in poverty, Allah will give them means out of His grace: for Allah is Ample-giving, and He knows all things." (24:32) God also prohibited the system of forcing female slaves into prostitution. "But let them who find not the means for marriage abstain from sexual relations until Allah enriches them from His bounty. And those who seek a contract for eventual emancipation from among whom your right hands possess - then make a contract with them if you know there is within them goodness and give them from the wealth of Allah which He has given you. And do not compel your slave girls to prostitution, if they desire chastity, to seek thereby the temporary interests of worldly life. And if someone should compel them, then indeed, Allah is to them, after their compulsion, Forgiving and Merciful."(24:33) The Prophet taught against even uttering anything that might injure the self-respect of the slave. The prophet had made it clear that the slave, too, enjoyed self-respect upon which none had the right to trespass. Islam teaches that the slave has the right to become even a leader and that in the event that he does get appointed as a leader, it is obligatory to obey him. "Even if it be a negro slave, with hair like dried grapes, who is appointed as your leader, you must hear and obey him." "Seat him behind thee for he is thy brother and it is the same soul as yours that is within him." Islam gave new meaning to the relation between master and slave by insisting that the master and the slave both had the same soul. It is true, nevertheless, that the slave does fall under the jurisdiction of the master. However, the master is duty-bound to fulfill the rights of the slave. It is his duty to meet the slave"s requirements of food, clothing, sexual gratification and so on. The slave is never to be harmed. He shouldn't be put into difficulty by entrusting him with burdensome tasks as well. In such fashion did Islam create a revolution of sorts in raising the slave, for the first time in history, to the position of a free man. It was through this way that it became possible for Islam to bridge the wide gap that existed between the mental states of the master and the slave. The end result of this revolution was that the owner was emancipated from the belief that the slave was a commodity on which could be carried out his choicest desire while the slave was freed of the notion that he was doomed to a fate in which he was to bear, and to be patient and labouring always. 3. Declared the emancipation of slaves to be an act of righteousness. By declaring the slave"s to be an existence which had rights of its own, Islam had made slavery non-existent. Without stopping at that point, however, it went further by turning to a course of action which would, in time, serve to eliminate the system in a very practical sense indeed. This practical step which Islam had adopted to make slavery virtually non-existent was its act of declaring the emancipation of slaves to be an act of righteousness. God said:"Those who follow the Messenger, the unlettered" prophet, whom they find written in what they have of the Torah and the Gospel, who enjoins upon them what is right and forbids them what is wrong and makes lawful for them the good things and prohibits for them the evil and relieves them of their burden and the shackles which were upon them. So they who have believed in him,honored him supported him and followed the light which was sent down with him - it is those who will be the successful." (7:157) This verse which makes it clear that the emancipation of slaves is an act of the highest virtue goes as follows:" What can make you know what is breaking through the difficult pass? It is the freeing of a slave or feeding on a day of severe hunger. An orphan of near relationship or a needy person in misery." (90:12-16) As far as the emancipation of slaves was concerned, the prophet had exhorted his companions towards it by making an example himself. He set free the slaves who were in his possession. There are numerous sayings of the prophet which encourage the freeing of slaves. "If anyone sets free a believing slave, each of his body parts will be set free from Hell so much so that it will be the hand for a hand, the leg for a right up to the sexual organ for the sexual organ." Once, the Prophet was asked:"Which is the highest act in the emancipation of slaves?" he replied, "To set free the most valuable slave of the master." He, while talking about those who become deserving of God"s reward twice, said, "He who confers a proper behavior upon the female slave under him, then gives her the best education, sets her free and then marries her will become entitled to a double reward." 4. Emancipation of slaves was made the act of expiation for many types of sin In addition to encouraging the believers towards its commission by declaring the emancipation of slaves to be a virtuous deed, Islam recommended it as an act of expiation for many types of sin. The atonement for sins like unintentional murder and breaking one"s vow of not approaching his wife was the freeing of one slave. As for those who were not ready to free slaves in expectation of God's reward alone, the command which made the emancipation of slaves an atoning act for sins committed, nevertheless, made it necessary for them to do so.