I quoted your scholar before who said that when Abraham uttered these words, Hagar was not in the picture yet. There was only Sarah and that the glad tidings refer always to Isaac in Quran, never to Ishmael. so on what basis are you saying Ishmael and Hagar?
Yes, Muslim scholars, some of them felt that it was Issac who was sacrificed. But they are not infallible. There are thousands of them. Not all said that it was Issac who was sacrificed.
Even now we may find some people who do not know the reality. You say Hagar was not in the picture. Which picture?? Do you mean bible or Quran? The Quran reports about the glad tidings of the first born (verse 37:101 and also about the glad tidings for the second son (issac) in verse 37:112.
In verse 37:102, Ismail says to his father Abraham ’ God willing you will find me as one of the patient ones". That means he agreed to be sacrificed. Note the word “saabireen” in the verse.
Now go to verse 21:85. There you will find the report about Ishmael and Idrees and zal Kifl. Allah says “they were all patient” ( Again the word 'saabireen" is used.
when Ishmael was old enough to walk with Abraham, he was with his mother Hagar in a different, distant place, never to see Abraham until he got married.
That is correct. He (Ishmael) was with his mother and father (Abraham) in Arabia. The incident of the sacrifice took place in Makkah, not in kana’an.
what is so great about a ram?
Why don’t you answer your own tradition and scholars?
Ram is there in both cases, in bible mentioned clearly. But in Quran it is not mentioned clearly. The only thing is that in bible, Abraham did not tell Issac what he was going to do. Issac kept on asking about the animal for sacrifice. Abraham did not tell him what was the mission. He said, “It will be provided.”