'Labour' in the Bible

remembering unceasingly your work of faith, and labour of love, and enduring constancy of hope, of our Lord Jesus Christ, before our God and Father;

For ye remember, brethren, our labour and toil: working night and day, not to be chargeable to any one of you, we have preached to you the glad tidings of God.

For this reason I also, no longer able to refrain myself, sent to know your faith, lest perhaps the tempter had tempted you and our labour should be come to nothing.

But we beg you, brethren, to know those who labour among you, and take the lead among you in the Lord, and admonish you,