Psalm 144:4

4 Man is like a breath;
his days are like a passing shadow.

Psalm 139:14-17

14 I will praise thee; for I am fearfully
and wonderfully made: marvelous are thy works;
and that my soul knoweth right well.
15 My substance was not hid from thee, when I was made in secret, and curiously wrought in the
lowest parts of the earth.
16 Thine eyes did see my substance, yet being
unperfect; and in thy book all my members were
written, which in continuance were fashioned,
when as yet there was none of them.
17 How precious also are thy thoughts unto me, O God!
how great is the sum of them!

Psalm 90:12

12 Teach us to number our days,
that we may gain a heart of wisdom.

Psalm 104:27-30

27 All creatures look to you to give them their food at the proper time.
28 When you give it to them, they gather it up;
when you open your hand, they are satisfied with good things.
29 When you hide your face, they are terrified;
when you take away their breath, they die and return to the dust.
30 When you send your Spirit, they are created, and you renew the face of the ground.