my life is worth nothing unless I use it for doing the work assigned me by the Lord...
the work of telling others the Good News about God's wonderful kindness & love.
Paul, the apostle, spoke these words to elders of the believers in Ephesus while he was on his way back to Jerusalem.
Paul was arrested in Jerusalem, appealed to Caesar, & was sent to Rome - he never saw the believers in Ephesus again.
Paul saw what He was supposed to be about, no matter where he was, or with whom, or when.
His mandate from God was to tell people about how God had provided a way of reconnecting with Him, because of Jesus.
We all have the same mandate on our lives.
No matter where we are,
no matter what jobs we may have,
or whatever is going on in our lives,
we have the same mandate as Paul did - tell others about Jesus.