Psalm 50:1-15 and Exodus 24:3-8

Psalm 50:1-15
1 A Psalm of Asaph. The God of gods, the Lord has spoken, and he has called the earth, from the rising of the sun even to its setting,
2 from Zion, the brilliance of his beauty.
3 God will arrive manifestly. Our God also will not keep silence. A fire will flare up in his sight, and a mighty tempest will surround him.
4 He will call to heaven from above, and to the earth, to discern his people.
5 Gather his holy ones to him, you who order his covenant above sacrifices.
6 And the heavens will announce his justice. For God is the judge.
7 Listen, my people, and I will speak. Listen, Israel, and I will testify for you. I am God, your God.
8 I will not reprove you for your sacrifices. Moreover, your holocausts are ever in my sight.
9 I will not accept calves from your house, nor he-goats from your flocks.
10 For all the wild beasts of the forest are mine: the cattle on the hills and the oxen.
11 I know all the flying things of the air, and the beauty of the field is with me.
12 If I should be hungry, I would not tell you: for the whole world is mine, and all its plentitude.
13 Shall I gnaw on the flesh of bulls? Or would I drink the blood of goats?
14 Offer to God the sacrifice of praise, and pay your vows to the Most High.
15 And call upon me in the day of tribulation. I will rescue you, and you will honor me.
Exodus 24:3-8
3 Therefore, Moses went and explained to the people all the words of the Lord, as well as the judgments. And all the people responded with one voice: "We will do all the words of the Lord, which he has spoken."
4 Then Moses wrote all the words of the Lord. And rising up in the morning, he built an altar at the base of the mountain, with twelve titles according to the twelve tribes of Israel.
5 And he sent youths from the sons of Israel, and they offered holocausts, and they immolated calves as peace-offerings to the Lord.
6 And so Moses took one half part of the blood, and he put it into bowls. Then the remaining part he poured over the altar.
7 And taking up the book of the covenant, he read it in the hearing of the people, who said: "All that the Lord has spoken, we will do, and we will be obedient."
8 In truth, taking up the blood, he sprinkled it on the people, and he said, "This is the blood of the covenant, which the Lord has formed with you concerning all these words."