Which of these verbs uses “sein" as its auxiliary?

haben

sein

wissen

machen

May we have a moment of silence for a good soul lost ... now I’ll say some words...Sometimes a warm memory sheds light in the dark

And eases the pain like the song of a Meadow Lark.

Then it flits away on silent wings and I'm alone;

Hungering for more of the light it had shone.

Shall grief's bitter cold sadness consume me,

Like a winter storm on the vast angry sea?

How can I fill the void and deep desperate need

To replant my heart with hope's lovely seed?

Then I look at a photo of your playful smiling face

And for a moment I escape to a serene happy place;

Remembering the laughter and all you would do,

Cherishing the honest, caring, loving spirit of you.

Shall spring's cheerful flowers bring life anew

And allow me to forget the agony of missing you?

Will spring's burst of new life bring fresh hope

And teach my grieving soul how to cope?

Sometimes I'll read a treasured card you had given me

And each word's special meaning makes me see,

The precious gift of love I was fortunate to receive,

And I realize you'd never want to see me grieve.

R I P I’m sorry for your loss