It was offered as such.
Method and medium do not matter.
As a matter of fact, the simple act of being asked to accept and agreeing is enough.
No physical act or mark is necessary.
Have a Nice Day.
Funny, my Bible didn't say all that. Yet you seem so sure of yourself. You must be privvy to a special Bible, along with a direct line to God for further clarification.
Since you have this specialized knowledge, can you please enlighten us by answering the other questions?