For who among men knows the things of a man except the man's spirit within him? So too, no one knows the things of God except the Spirit of God.

The spiritual person evaluates everything but is subject to no one else's evaluation.

With me is it but a very small thing, that I should be judged of you, either of man's day. No I judge not mine own self.

If any one imagines that he already possesses any true knowledge, he has as yet attained to no knowledge of the kind to which he ought to have attained;

What then is my reward? That when I preach the gospel, I may put the gospel of Christ to no expence, that I abuse not my power in the gospel.

You have been put to no test but such as is common to man: and God is true, who will not let any test come on you which you are not able to undergo; but he will make with the test a way out of it, so that you may be able to go through it.

by which you are also being saved, if you hold fast to the message I proclaimed to you, unless you believed to no purpose.

And, if Christ hath not been raised, to no purpose, is your faith, yet, are ye in your sins!

Therefore, my beloved brothers and sisters, be steadfast, immovable, always excelling in the work of the Lord [always doing your best and doing more than is needed], being continually aware that your labor [even to the point of exhaustion] in the Lord is not futile nor wasted [it is never without purpose].