Another Crucial Chapter In Genesis (Bereishit), Chapter 17

Does any of these teachings no longer applies in our day and age?

Did G-d change this mind, that mankind no longer need to be kind, obedient, just and caring for others in our present world?

G-d has spoken. Let no one nullify it; let alone abhor it.

“Hospitality: Visiting The Sick And Attending To Strangers”
“Promise Of A Son”
“G-d’s Love For Abraham”
“Abraham’s Intercession”
“G-d’s Justice”

Hashem appeared to him in the plains of Mamre while he was sitting at the entrance of the tent in the heat of the day.
18:1
He lifted his eyes and saw: And behold! three men were standing over him. He perceived, so he ran toward them from the entrance of the tent, and bowed toward the ground.
18:2
And he said, “My Lord, if I find favor in Your eyes, please pass not away from Your servant.”
18:3
And he said, “I will surely return to you at this time next year, and behold Sarah your wife will have a son.” Now Sarah was listening at the entrance of the tent which was behind him.
:10
And Sarah laughed at herself, saying, “After I have withered shall I again have delicate skin? And my husband is old!”
:12
– Is there anything beyond Hashem?! …
:14
And Hashem said, “Shall I conceal from Abraham what I do,
:18
For I have loved him, because he commands his children and his household after him that they keep the way of Hashem, doing charity and justice, in order that Hashem might then bring upon Abraham that which He had spoken of him.”
:19
So Hashem said, “Because of the outcry of Sodom and Gomorrah has become great, and because their sin has been very grave, I will descend and see: …
:20-21
Abraham came forward and said, “Will You also stamp out the righteous along with the wicked?
:23
What if there should be fifty righteous people in the midst of the city? Would You still stamp it out rather than spare the place for the sake of the fifty righteous people within it?
:24
And Hashem said, “If I find in Sodom fifty righteous people in the midst of the city, then I would spare the entire place on their account.”
:26
So he said, “Let not my Lord be annoyed and I will speak but this once: What if ten would be found there? And He said, “I will not destroy on account of ten.”
:32
Hashem departed when He had finished speaking to Abraham, and Abraham returned to his place.
:33

1 Now the Lord appeared to him in the plains of Mamre, and he was sitting at the entrance of the tent when the day was hot.
2 And he lifted his eyes and saw, and behold, three men were standing beside him, and he saw and he ran toward them from the entrance of the tent, and he prostrated himself to the ground.
3 And he said, “My lords, if only I have found favor in your eyes, please do not pass on from beside your servant.
4 Please let a little water be taken, and bathe your feet, and recline under the tree.
5 And I will take a morsel of bread, and sustain your hearts; after[wards] you shall pass on, because you have passed by your servant.” And they said, “So shall you do, as you have spoken.”
6 And Abraham hastened to the tent to Sarah, and he said, “Hasten three seah of meal [and] fine flour; knead and make cakes.”
7 And to the cattle did Abraham run, and he took a calf, tender and good, and he gave it to the youth, and he hastened to prepare it.
8 And he took cream and milk and the calf that he had prepared, and he placed [them] before them, and he was standing over them under the tree, and they ate.
9 And they said to him, “Where is Sarah your wife?” And he said, “Behold in the tent.”
10 And he said, “I will surely return to you at this time next year, and behold, your wife Sarah will have a son.” And Sarah heard from the entrance of the tent, and it was behind him.
11 Now Abraham and Sarah were old, coming on in years; Sarah had ceased to have the way of the women.
12 And Sarah laughed within herself, saying, “After I have become worn out, will I have smooth flesh? And also, my master is old.”
13 And the Lord said to Abraham, “Why did Sarah laugh, saying, ‘Is it really true that I will give birth, although I am old?’
14 Is anything hidden from the Lord? At the appointed time, I will return to you, at this time next year and Sarah will have a son.”
15 And Sarah denied, saying, “I did not laugh,” because she was afraid. And He said, “No, but you laughed.”
16 And the men arose from there, and they looked upon Sodom, and Abraham went with them to escort them,
17 And the Lord said, “Shall I conceal from Abraham what I am doing?
18 And Abraham will become a great and powerful nation, and all the nations of the world will be blessed in him.
19 For I have known him because he commands his sons and his household after him, that they should keep the way of the Lord to perform righteousness and justice, in order that the Lord bring upon Abraham that which He spoke concerning him.”
20 And the Lord said, “Since the cry of Sodom and Gomorrah has become great, and since their sin has become very grave,
21 I will descend now and see, whether according to her cry, which has come to Me, they have done; [I will wreak] destruction [upon them]; and if not, I will know.”
22 And the men turned from there and went to Sodom, and Abraham was still standing before the Lord.
23 And Abraham approached and said, “Will You even destroy the righteous with the wicked?
24 Perhaps there are fifty righteous men in the midst of the city; will You even destroy and not forgive the place for the sake of the fifty righteous men who are in its midst?
25 Far be it from You to do a thing such as this, to put to death the righteous with the wicked so that the righteous should be like the wicked. Far be it from You! Will the Judge of the entire earth not perform justice?”
26 And the Lord said, “If I find in Sodom fifty righteous men within the city, I will forgive the entire place for their sake.”
27 And Abraham answered and said, “Behold now I have commenced to speak to the Lord, although I am dust and ashes.
28 Perhaps the fifty righteous men will be missing five. Will You destroy the entire city because of five?” And He said, “I will not destroy if I find there forty-five.”
29 And he continued further to speak to Him, and he said, “Perhaps forty will be found there.” And He said, “I will not do it for the sake of the forty.”
30 And he said, “Please, let the Lord’s wrath not be kindled, and I will speak. Perhaps thirty will be found there.” And He said, “I will not do it if I find thirty there.”
31 And he said, “Behold now I have desired to speak to the Lord, perhaps twenty will be found there.” And He said, “I will not destroy for the sake of the twenty.”
32 And he said, “Please, let the Lord’s wrath not be kindled, and I will speak yet this time, perhaps ten will be found there.” And He said, “I will not destroy for the sake of the ten.”
33 And the Lord departed when He finished speaking to Abraham, and Abraham returned to his place.