1My brothers, don’t hold the faith of our glorious Lord Jesus Christ with partiality. 2For if a man with a gold ring, in fine clothing, comes into your synagogue, and a poor man in filthy clothing also comes in, 3and you pay special attention to him who wears the fine clothing and say, “Sit here in a good place;” and you tell the poor man, “Stand there,” or “Sit by my footstool” 4haven’t you shown partiality among yourselves, and become judges with evil thoughts? 5Listen, my beloved brothers. Didn’t God choose those who are poor in this world to be rich in faith and heirs of the Kingdom which he promised to those who love him? 6But you have dishonored the poor man. Don’t the rich oppress you and personally drag you before the courts? 7Don’t they blaspheme the honorable name by which you are called?
8However, if you fulfill the royal law according to the Scripture, “You shall love your neighbor as yourself,” you do well. 9But if you show partiality, you commit sin, being convicted by the law as transgressors. 10For whoever keeps the whole law, and yet stumbles in one point, he has become guilty of all. 11For he who said, “Do not commit adultery,” also said, “Do not commit murder.” Now if you do not commit adultery but do murder, you have become a transgressor of the law. 12So speak and so do as men who are to be judged by the law of freedom. 13For judgment is without mercy to him who has shown no mercy. Mercy triumphs over judgment.
14What good is it, my brothers, if a man says he has faith, but has no works? Can faith save him? 15And if a brother or sister is naked and in lack of daily food, 16and one of you tells them, “Go in peace. Be warmed and filled;” yet you didn’t give them the things the body needs, what good is it? 17Even so faith, if it has no works, is dead in itself. 18Yes, a man will say, “You have faith, and I have works.” Show me your faith without works, and I will show you my faith by my works.
19You believe that God is one. You do well. The demons also believe—and shudder. 20But do you want to know, vain man, that faith apart from works is dead? 21Wasn’t Abraham our father justified by works, in that he offered up Isaac his son on the altar? 22You see that faith worked with his works, and by works faith was perfected. 23So the Scripture was fulfilled which says, “Abraham believed God, and it was accounted to him as righteousness,” and he was called the friend of God. 24You see then that by works a man is justified, and not only by faith. 25In the same way, wasn’t Rahab the prostitute also justified by works when she received the messengers and sent them out another way? 26For as the body apart from the spirit is dead, even so faith apart from works is dead.
Isaac was the son of promise to Abraham and Sarah, and the half-brother of Ishmael (who became the father of the Arab people) and the father of Esau (from whom came the Edomites) and Jacob. Isaac was born of a mother beyond childbearing age by a miracle of Yahweh, and was a focus of the testing of Abraham and Sarah, his parents.
The name Isaac means "to laugh, or he laughs," which is based on the response of Sarah to Yahweh's statement to Abraham that she was to bear a son. Sarah was hiding out of sight when this announcement was made by the Angel of Yahweh, and upon hearing this statement, she laughed, which she denied later before the angel. Such an idea was considered impossible but happened as promised by the heavenly visitor. Later, Abraham's faith was tested when God commanded him to sacrifice his only son, Isaac. He followed through with this command of God but received him back alive, since Yahweh kept him from doing so, declaring that now He knew by experience (see the meaning of Hebrew yada') that Abram did not withhold his son.
Later in Isaac's life, he married Rebekah, who bore him Jacob (biography) and Esau (his favorite), and was tricked by Jacob and Rebekah into giving his younger son Jacob his blessing.
Isaac was the only son of Abraham and Sarah, a half-brother of Ishmael and father of Esau and Jacob. Isaac was born when both of his parents were very old, the circumstances surrounding his birth being a test of their faith. The meaning of Isaac's name (“he laughs”) is explained by the fact that Abraham laughed when he was told a son would be born to him at the age of a hundred. Abraham's faith was further tested when he was told to sacrifice Isaac but was stopped at the last moment from carrying out this instruction.
See also Biographies of Bible Characters, People and Characters in the Bible.