Luke 10:2
And he said to them, “The harvest is plentiful, but the laborers are few. Therefore pray earnestly to the Lord of the harvest to send out laborers into his harvest.

When a man says, 'Because I have sinned I have lost (salvation)', what he is really saying on the other side is, 'I had it because I was good.' He is wrong in both respects.
Martyn Lloyd-Jones