'Labours' in the Bible

As for Titus, remember that he is a partner with me, and is my comrade in my labours for you. And as for our brethren, remember that they are delegates from the Churches, and are men in whom Christ is glorified.

We do not exceed our due limits, and take credit for other men's labours; but we entertain the hope that, as your faith grows, we shall gain promotion among you--still keeping within our own sphere--promotion to a larger field of labour,