Although Isaac was not Abraham's only son, he was the son who was to inherit Abraham's promised blessings. It is possible this parallels God's actual sacrifice of his son, Jesus, for the sins of man. (See: [[rc://en/tw/dict/bible/kt/inherit]] and [[rc://en/tw/dict/bible/kt/promise]] and [[rc://en/tw/dict/bible/kt/sin]])
After important events, it is common for Scripture to affirm the tenets of a covenant. This serves as a reminder of the covenant and affirms it. (See: [[rc://en/tw/dict/bible/kt/covenant]])
Extra care should be taken when translating "testing." It is best to avoid using the same word used for "tempting" even though they overlap in meaning. This is because Scripture also says God does not tempt anyone. (See: [[rc://en/tw/dict/bible/kt/test]] and [[rc://en/tw/dict/bible/kt/tempt]] and [James 2:13](../../jas/02/13.md))