Psalm 128:1-5 and Genesis 17:1, 9-10, 15-22

Psalm 128:1-5
1 A Canticle in steps. Blessed are all those who fear the Lord, who walk in his ways.
2 For you will eat by the labors of your hands. Blessed are you, and it will be well with you.
3 Your wife is like an abundant vine on the sides of your house. Your sons are like young olive trees surrounding your table.
4 Behold, so will the man be blessed who fears the Lord.
5 May the Lord bless you from Zion, and may you see the good things of Jerusalem, all the days of your life.
Genesis 17:1, 9-10, 15-22
1 In truth, after he began to be ninety-nine years of age, the Lord appeared to him. And he said to him: "I am the Almighty God. Walk in my sight and become complete.
9 Again God said to Abraham: "And you therefore shall keep my covenant, and your offspring after you in their generations.
10 This is my covenant, which you shall observe, between me and you, and your offspring after you: All the males among you shall be circumcised.
15 God said also to Abraham: "Your wife Sarai, you shall not call Sarai, but Sarah.
16 And I will bless her, and from her I will give you a son, whom I will bless, and he will be among the nations, and the kings of the peoples will rise from him."
17 Abraham fell on his face, and he laughed, saying in his heart: "Do you think a son can be born to a one hundred year old man? And will Sarah give birth at the age of ninety?"
18 And he said to God, "If only Ishmael would live in your sight."
19 And God said to Abraham: "Your wife Sarah shall give birth to a son, and you shall call his name Isaac, and I will establish my covenant with him as a perpetual covenant, and with his offspring after him.
20 Likewise, concerning Ishmael, I have heard you. Behold, I will bless and enlarge him, and I will multiply him greatly. He will produce twelve leaders, and I will make him into a great nation.
21 Yet in truth, I will establish my covenant with Isaac, to whom Sarah will give birth for you at this time next year."
22 And when he had finished speaking with him, God ascended from Abraham.