Job 22:2
"Can a man be profitable unto God, as he that is wise may be profitable unto himself?"
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So likewise ye, when ye shall have done all those things which are commanded you, say, We are unprofitable servants: we have done that which was our duty to do.
O my soul, thou hast said unto the LORD, Thou art my Lord: my goodness extendeth not to thee;
What is the Almighty, that we should serve him? and what profit should we have, if we pray unto him?
And if thy right eye offend thee, pluck it out, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell.
If thou be wise, thou shalt be wise for thyself: but if thou scornest, thou alone shalt bear it.
To keep the commandments of the LORD, and his statutes, which I command thee this day for thy good?