'Labors' in the Bible

not boasting {beyond limits} in the labors of others, but having hope [that as] your faith is growing to be enlarged greatly by you according to our assignment,

Are they servants of Christ?--I am speaking as though I were beside myself--I [am] more so, with far greater labors, with far more imprisonments, with beatings to a much greater degree, in [danger of] death many times.

And I heard a voice from heaven saying, "Write: 'Blessed [are] the dead who die in the Lord from now on!'" "Yes," says the Spirit, "in order that they may rest from their labors, for their deeds follow after them."