Ecclesiastes 1:17

And I gave
<05414> (8799)

my heart
<03820>

to know
<03045> (8800)

wisdom
<02451>_,

and to know
<03045> (8800)

madness
<01947>

and folly
<05531>_:

I perceived
<03045> (8804)

that this
<01571>

also is vexation
<07475>

of spirit
<07307>_.

Ecclesiastes 3:18

I said
<0559> (8804)

in mine heart
<03820>

concerning the estate
<01700>

of the sons
<01121>

of men
<0120>_,

that God
<0430>

might manifest
<01305> (8800)

them, and that they might see
<07200> (8800)

that they
<01992>

themselves are beasts
<0929>_.

{that God...: or, that they might clear God, and see, etc}