Therefore in regards to such, the Sacred Scripture says:

    << Come children, listen to me, I will teach you the fear of the Lord: Is there some one who desires life, to taste good and yearns for long days ( in eternity - Ps 20,5 ) ? >> (Ps 33,12-13), << to live without end, and not (ever - Jn 8,51 ) see THE TOMBE ? >> ( Cf. Ps 48,10)..

    And if someone said: “ It doesn't interest me, to taste the good, to live for ever, without end and to never see death”, then know that it’s also written: <> (Ps 48,11)… without forgetting to check the Psalm [31], 9, and you will have the opportunity of making yourself not only laugh, but also reflect ! …

N.B.

   We’ll shorten the search for you, this be the Psalm 31, 9: << Do not be deprived of intelligence like the mule and the horse >>… That is, don’t be satisfied only of a box of death, or rather of a cassette of ash at the end of your life … that, with only one puff will disappear and nothing will remain, but above all look for He who can help us come out of it, or rather - as says the scripture: << Look for the Lord, whilst He makes him self found, invoke him whilst He’s nearby. The wicked abandon his way and the iniquitous  his thoughts ! >> (Is 55, 6-7)… since, as St John Bosco says: << You are created for loving God. You can love whatever thing of the earth, but you will always feel an emptiness in your heart if you don’t ( believe and ) love God ! >> …

Certainly after this, you could still say:

     But does one need to know or believe that God exists ?, and what must I do to eventually Believe in God ?...