It sort of begs the question: why would God use a people NOT chosen to reveal himself? I mean: IF God knows the future and the consequences of every action, would he - naturally - "choose" "the people" best suited to reveal himself? Or would he just choose randomly and hope for the best?

Tell you what, if you are a true Christian and when you are in Heaven, you can ask Yehova Yahweh yourself.

Well this is the simplest way I see it, there were 12 tribes of Israel, and they were described as a stubborn and hard hearted people, hence he didn't pick the easiest lot! Even when he appeared physically as fire or cloud, they fell away. Abraham was from Ur, it was when Benjamin fell to David of Judah that the alliance changed. In a more complex view, 12 tribes, 12 hours, 12 x 2 is 24hrs, 12 x 12 is 144, there is a lot of numerology in the bible as sacred geometry, we just can't get away from it, and it has hidden meaning, but the biggest mystery was Christ. Even Paul described the need for milk to the beginners, before revealing more.

I think it was because of the faith and faithfulness of His servant Abraham. 12/7/23

Take a secular analogue of this. Assume you were the president, and you needed to establish diplomacy with different nations. Would you choose a certain envoy to each nation with the skills necessary to perform the task, or would you just send the entire state department to each nation, one-at-a-time? Assuming there is a God and that God wants to reveal Himself to His people, but doesn't expect those people to be able to handle Him in His raw form, what better option would there have been than to choose a group of people for the mission that had certain aptitude to do an acceptable job in the process?

Christians: brush-up your bibles. This is an easy question. God uses suffering for our good, and He delights in taking what is bad and evil, and making it good. God chose Israel when they were small and weak - a people without a land. Deuteronomy 7:6 "For you are a people Holy to the LORD your God. The LORD your God has chosen you to be a people for His treasured possession, out of all the peoples who are on the face of the Earth." Read also Exodus 3:7-9: https://www.biblegateway.com/passage/?search=Exodus%203%3A7-9&version=ESV Through Abraham who is The Father of the Faith, God built a powerful nation. This is recorded in the book of Genesis. Genesis 12:1-3 "Now the LORD said to Abram, Go from your country and your kindred and your father's house to the land that I will show you. 2 And I will make of you a great nation, and I will bless you and make your name great, so that you will be a blessing. 3 I will bless those who bless you, and him who dishonors you I will curse, and in you all the families of the Earth shall be blessed." The key words here to look for why God chose a certain people: righteousness, suffering, endurance and faith. Romans 4:3" For what does the Scripture say? Abraham believed God, and it was counted to him as righteousness." Hebrews 11:29" By faith they passed through the Red sea as by dry land: which the Egyptians assaying to do were drowned."

That's a good question. It says in the New Testament that "God is no respecter of persons." You can translate this any way you wish but I think it means he doesn't discriminate against people, he treats them all equally. Therefore this verse contradicts the "Chosen People" idea. BTW the Jews wrote the bible.