Paul was a Pharisee, a Pharisees of Pharisees. they had created their own Law. He followed the "traditions of his fathers" Blameless".
Gal. 1:
13 For ye have heard of my conversation in time past in the Jews' religion,
how that beyond measure I persecuted the church of God, and wasted it: (Exactly what Law of God did the Pharisees follow "blameless" that instructed them to murder the prophets?)
14 And profited in the Jews' religion above many my equals in mine own nation,
being more exceedingly zealous of the traditions of my fathers.
Acts 7:
52 Which of the prophets have not your fathers persecuted? and they have slain them which shewed before of the coming of the Just One; of whom ye have been now the betrayers and murderers:
53 Who have received the law by the disposition of angels,
and have not kept it.
9 But in vain they do worship me, teaching
for doctrines the
commandments of men. (Not from God as you preach)
The Commandments of men that the Pharisees created, according to my Savior, included their own version of the Levitical Priesthood "works of the Law" which was used to "cleanse" people of their sins.
5 Circumcised the eighth day, of the stock of Israel,
of the tribe of Benjamin, an
Hebrew of the Hebrews; as touching the law, a Pharisee;
As a Pharisee he knew He had been serving satan and not God. Did he call himself a "Believer", an Israelite? No, as touching the Law he wasn't an believer or an Israelite, he was a Pharisee who Jesus had exposed over and over as NOT FOLLIOWING GOD's Laws.
6 Concerning zeal,
persecuting the church;
touching the righteousness which is in the law, ( being cleansed by the carnal Priesthood) blameless.
9 And be found in him,
not having mine own righteousness,
which is of the law, (Not God's Laws, but the Law of the Pharisee Jesus said placed burdens on the necks of His people.)but that which is through the faith of Christ,
the righteousness which is of God by faith:
God's instructions are Righteous, the Pharisees were servants of satan. It is a falsehood to preach the Pharisees, including Paul, were following God's Laws for Salvation.
You can't take a couple of sentences from the Bible and twist them to make Jesus out to be a liar and made void all the rest of the Bible.
Well, you can, but it is not truth.