Genesis 22:1

There are some Sages who say [that this event occurred] “After the words of Satan” who said accusingly [to God], “From all the feasts that Avraham prepared, he did not offer as sacrifice to You a single bull or ram.” He [God] responded to him, “He does everything for the sake of his son. Yet, if I were to say to him, ‘Sacrifice him to Me,’ he would not refuse.” There are those [other Sages] who say “After the words of Yishmael” who would boast to Yitzhak that he was circumcised when he was thirteen and did not resist. Yitzhak responded to him: “You try to intimidate me with one limb. If God would tell me, ‘Sacrifice yourself to Me,’ I would not refuse.”

This is the response of the pious— an expression of humility and readiness.

And it was after these things that Izhak and Ishmael contended; and Ishmael said, It is right that I should inherit what is the father's because I am his firstborn son. And Izhak said, It is right that I should inherit what is the father's, because I am the son of Sarah his wife, and thou art the son of Hagar the handmaid of my mother. Ishmael answered and said, I am more righteous than thou, because I was circumcised at thirteen years; and if it had been my will to hinder, they should not have delivered me to be circumcised; but thou wast circumcised a child eight days; if thou hadst had knowledge, perhaps they could not have delivered thee to be circumcised. Izhak responded and said, Behold now, today I am thirty and six years old; and if the Holy One, blessed be He, were to require all my members, I would not delay. These words were heard before the Lord of the world, and the Word of the Lord at once tried Abraham, and said to him, Abraham! And he said, Behold me.

Some say we need to read with different spelling: נשא instead of נסה ‘Uplifted’ instead of ‘Test’. And I say, the content of the Parashah (the story) proves that נסה is a ‘Test’. And experts explain that נסה (Test) means - to know what exists in the present. And the Gaon (a Babylonian Jewish leader) explained that the purpose of the test was to show His righteousness to the people. But the Gaon surely knew that when Avraham bound his son, no one else was there. And others say “go to the land of Moriah, and offer him there as a burnt offering on one of the heights” meant to be “make a sacrifice upon the mountain.” And not him for sacrifice. And Abraham did not know the secret of the prophecy, and he hurried to slaughter him, and God said to him, “I did not ask for this.” All these wise leaders needed their interpretations because they couldn't believe that God would command a Mitzvah and then change it. But all those leaders did not notice that there is a precedent for a change like that. In the case of commanding a role for the first born male child (Bamidbar ג – Nombers 3) He replaces them with the Levites one year later. (And my understanding is) that the text of the Torah uses “נסה" Test, and that is why we don't need to think that anything changed. God tested Avraham for the purpose of giving him a reward (and not for the purpose of commanding sacrifices or showing his righteousness).

AND G-D TRIED ABRAHAM. The matter of “trial,”, III, 24. in my opinion, is as follows: Since a man’s deeds are at his absolute free command, to perform them or not to perform them at his will, on the part of one who is tried it is called “a trial.” But on the part of the One, blessed be He, who tries the person, it is a command that the one being tested should bring forth the matter from the potential into actuality so that he may be rewarded for a good deed, not for a good thought alone.
Know further that G-d trieth the righteous, for knowing that the righteous will do His will, He desires to make him even more upright, and so He commands him to undertake a test, but He does not try the wicked, who would not obey. Thus all trials in the Torah are for the good of the one who is being tried.

ויהי אחר הדברים האלה, whenever we find the construction אחר הדברים האלה what follows is conceptually immediately following what has been reported immediately before. Examples are found in 15,1 after Avraham had killed the four kings who had taken Lot captive. At that time G’d had told him not to be afraid of any repercussions. We also find such a construction in verse 20 of our chapter where the Avraham was informed of the birth of Rivkah after we heard that Yitzchok had been born. We find a similar construction also in Esther 3,1 where Mordechai told Esther and she told the king about the assassination plot by Bigtan and Teresh. The event occurred around the time when Haman was promoted and wanted to kill Mordechai and the Jewish people. The fact that he had saved the king’s life became the immediate cause of Mordechai’s rise in the king’s esteem. [if I understand the author correctly, he wants to tell us that although sequentially the matters related are not immediate chronologically, the Torah or Scriptures use the formulation to trace them to events which occurred some time back. Yitzchok was at least 37 years old before Avraham heard about the birth of Rivkah. Similarly, if the king had rewarded Mordechai for his part in discovering the plot immediately, history might have taken a different course. Ed.] Here too, the words mean that what follows occurred after Avraham and Avimelech had concluded their covenant according to which until the fourth generation Avraham’s descendants would not register a claim against lands owned by the Philistines at this time. G’d became very angry at this high-handed action by Avraham, seeing that he had given away lands which were part of what G’d had promised to Avraham and his descendants at the “covenant of the pieces” in chapter 15. We know that a condition of that covenant had been not to allow a single soul of the Canaanites to survive in that land, according to both Deuteronomy 20,16 as well as according to Joshua 13,3 and 15,45-47. Clearly lots had been cast concerning the lands owned by the 5 Philistine rulers, and who was to settle in those lands after the conquest. As a result of Avraham’s high-handed action,

נסה את אברהם, to demonstrate that Avraham’s love for G’d as well as his fear of G’d was not merely potential but actual, much as G’d's goodness is not merely potential but actual. The purpose of man’s existence is to emulate the virtues of G’d, and by means of this “test” Avraham had an opportunity to demonstrate this. When G’d created man He had set Himself the objective of “let us make man in Our image etc.,” i.e. as much like Divine beings as is it possible for a creature to be . (Genesis 1,26)

ויהי אחר הדברים האלה, after what happened to Avraham with Avimelech and as a result of his pact he had resided among the Philistines for many years, so that he had decided to migrate to Beer Sheva. At that point he received the instruction from G’d concerning his only son (by Sarah). It is very difficult to explain the matter of G’d’ “testing” someone, seeing that G’d knows in advance what the result of such a test is going to be. What then is the point of such a test? If the point was to demonstrate to the world at large that Avraham successfully passed such a test, how could this be accomplished in a setting where only Avraham and Yitzchok were present? He had even left the lads who had accompanied him behind so that there were no witnesses whatsoever to his carrying out a command which he had not even told Yitzchok about until the last possible moment! Even if Avraham had told someone what had transpired on the mountain, who would have believed him? The truth is that the purpose of the trial was to demonstrate to the world Avraham’s love for G’d. It was not meant to demonstrate anything to the generation during which Avraham lived, but to prove this to subsequent generations of people who believed in the Torah which was handed down to us by Moses at the command of G’d Himself. All that is written in the Torah [including such stories as that of Bileam and Balak, none of which had been witnessed by any Jew alive at that time, Ed.] is meant to teach the extent to which we are expected to demonstrate our love for G’d if and when the occasion arises. We know that Avraham loved Yitzchok more than he loved himself, seeing that he was already old and did not expect anymore out of life. If Yitzchok were to die at that time before he had married and raised a family, he would not have enjoyed any true satisfaction in his life on earth. This thought must have been very upsetting for his father Avraham. If he was nonetheless prepared to carry out G’d’s command without hesitation this was indeed a feat that all his descendants would marvel at. The fact that Avraham, who had prayed to G’d for sinners to be given a reprieve, did not even pray to G’d to spare the life of Yitzchok until he had at least married and started to raise a family, is meant to be an inspiration to all of us. Moreover, G’d Himself had provided Avraham with arguments which would have entitled him to at least defer sacrificing Yitzchok since he had told him that he, Avraham, would be known in …