Help me with Origins

[itsnicetbkind]

Where did the follow sayings and or phrases start?

1. Toe the line
2. Bite the bullet
3. Butter someone up

Would this site help?

www.phrases.org.uk/meanings/toe-the-line.html

I find phrases are always something to do with sailing / the sea. No help for those ones though I’m afraid

Bite the Bullet; Google says This idea is thought to have derived from battlefield surgeries, when amputations and medieval medical procedures were done without anaesthetic. To distract the 'patient' from the pain, a bullet was placed in their mouth for them to bite down on.

Butter Up; from India, circa 1600BCE where people were said to have hurled balls of ghee (exceptionally tasty clarified butter) at statues of their gods. They believed that this would render them in good stead with the gods (enough to ask a sneaky favour), or result in general good fortune.