The most intimate thing you can do with another person is to kill them.
The moment that they realise they are going to die and that you are the one to kill them.
It is a deep emotional connection as fear turns into acceptance as dopamine and adrenaline rush through their system to ease the pain of their slow death.

Then there is peace, the body stops twitching and the world becomes still for a brief moment, and silence fills the air.

Don't worry if you haven't experienced this, you will soon.