The following poem is by the medieval Jewish poet Yehuda Halevi. For more about him, see this earlier post.

His Thresholds

Seek the Lord and His thresholds, my soul:
     offer your songs like incense before Him.
For if you’re pursuing the vapours of Time
     and calling their spells and sorcery Truth,
and roaming in search of them night and day,
     and sleeping sweetly after their feasts—

know that your hand holds nothing at all
     but a tree whose branches soon will wither.
Be before your God and King,
     beneath whose wings you’ve come for shelter.
Let His Name be hallowed and praised
     by all through whom His breath still moves.

Tr. Peter Cole