The phrase "Do not lay your hand upon" is a way of saying "do not harm." God said basically the same thing twice to emphasize that Abraham should not hurt Isaac. Alternate translation: "Do not hurt the boy in any way" (See: [[rc://en/ta/man/translate/figs-idiom]] and [[rc://en/ta/man/translate/figs-parallelism]])
The words "I" and "me" refer to Yahweh. When translating what is in the quote, do it as the angel of Yahweh did and use the words "I" and "me" when referring to Yahweh.
# you fear God
This refers to deeply respecting God and showing that respect by obeying him.
It is implied that God knows that Abraham has another son, Ishmael. This emphasizes that Isaac is the son that God promised to give Abraham. See how you translated a similar phrase in [Genesis 22:2](../22/02.md). (See: [[rc://en/ta/man/translate/figs-explicit]])