Phrasal Verb "lies In"

[Arcfixer]

Howdy, folks.

I have a question about the phrasal verb "lies in", or "lie in", as in having a basis in. Example: His strength lies in his serenity.

I have learned that the preposition or adverb are treated as particles, and are not modified by tense or number. But what about the verb itself? Is it treated as a particle also?

Example 1: There is pure stillness, and in that stillness lies our joy and peace.
Example 2: There is pure stillness, and in that stillness lie our joy and peace.

Which is correct?

And no, I don't teach English, and no, this is not my homework.

Thanks in advance for your help.

Peace,
Arc

[Tdol]

The verb continues to show tense and number.

[Arcfixer]

Howdy, folks.

Hi, Tdol. Thanks for your reply.

Just for clarification, you are telling me that the correct version is:

There is pure stillness, and in that stillness lie our joy and peace.

Or, more simply, ...our joy and peace lie in that stillness.

Thanks,

Arc

[acorn]

You could use the singular "lies" if you consider "joy and peace" together as one notion. Either one would sound fine:
Our joy and peace lie in that stillness.
Our joy and peace lies in that stillness.

And somehow I would have a slight preference for "lies" in the inverted version:
There is pure stillness, and in that stillness lies our joy and peace.