And besides this, giving all diligence, add to your faith virtue;
and to virtue knowledge; and to knowledge temperance; and to
temperance patience; and to patience godliness; and to godliness
brotherly kindness; and to brotherly kindness charity. For if these
things be in you, and abound, they make you that you shall neither
be barren nor unfruitful in the knowledge of our Lord Jesus Christ.

In the sixth chapter of Ephesians, Paul pleads:

Wherefore take unto you the whole armour of God, that ye may be able
to withstand in the evil day, and having done all, to stand. Stand
therefore, having your loins girt about with truth, and having
on the breastplate of righteousness; and your feet shod with the
preparation of the gospel of peace; above all, taking the shield of
faith, wherewith ye shall be able to quench all the fiery darts of
the wicked. And take the helmet of salvation, and the sword of the
Spirit, which is the Word of God: Praying always with all prayer
and supplication in the Spirit, and watching thereunto with all
perseverance and supplication for all saints.

Peter was a rock, hewn into shape and polished by the divine hand; Paul
was a "chosen vessel" to bear the Redeemer's Name before "the Gentiles
and kings and the children of Israel." Paul was an orator with a
purpose; he was a man with a message. He was eloquent because he knew
what he was talking about and meant what he said. No wonder, for he was
called to service by a summons so distinct and unmistakable that he
turned at once from persecuting to preaching. Paul is responsible for
one of the most inspiring sentences in the Bible--"I was not disobedient
unto the heavenly vision." It was the key to his whole life.