Hi dyanaprajna2011, most are like you and do not understand Paul very well. The Apostle Paul was the greatest and most knowledgeable Apostle concerning the Spiritual understanding of the Law:

2Pe 3:15-17
(15) And account that the longsuffering of our Lord is salvation; even as our beloved brother Paul also according to the wisdom given unto him hath written unto you;
(16) As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction.
(17) Ye therefore, beloved, seeing ye know these things before, beware lest ye also, being led away with the error of the wicked, fall from your own stedfastness.

You see dyanaprajna2011, even the Apostle Peter recognized the special WISDOM that had been given to Paul, which LAWLESS men would then distort and twist.

Now, you have fallen INTO the category of being one of those whom Peter was speaking about. Take for example the first Scripture you referenced in 2 Cor 12:16. You have presented that Paul was lying and using deceit, even as being so bold as to openly admit to this sin. Shame on you! The Apostle Paul was speaking of how he did not "hold out his hand" as the churches of this world do today, and ask for them to take care of him. This was a crafty move on his part, to not let them have any reason to accuse him of having "monetary" MOTIVES in his presentation of the Gospel to them. That totally disarmed any accusations that would say he was preaching to them for profit...and that was very crafty of him. You should apologize for even suggesting Paul was a liar and a deceitful person. KB