How important is the Word: Old Testament and/or New Testament? Why shoul...

I would like to pose a question, that I have never heard
addressed by contemporary Christians, in all the churches that I ever
visited: 

If we should live by every word of
God, why do preachers make statements like, 'the Old Testament has been done
away with?' I understand their point but Jesus said  EVERY word...

'...man shall not live by bread
alone, but by every word of God.'

Most pastors would have us all to believe that
when Jesus made this statement that He had a little pocket New Testament Bible
in his shirt pocket...

Unfortunately, we must reject this inference because When
Jesus made the above statement to Satan, THERE WAS NO NEW
TESTAMENT WRITTEN!

Consider that during Jesus entire earthly life,
his death, resurrection, during the time that the Apostles were actually doing
those things actually recorded in the book of Acts, ALL the epistles AND the
book of Revelation every time an Apostle refers to the scriptures; Word of God,
Word of truth; or GOSPEL, they are 100% of the time referred to
Genesis-Malachi!

Food 4 thought: (you do the dishes): Peter preached the gospel
to Cornelius and his house (Acts 10) without quoting any New
Testament verses! (Because there were none!)

"Then the Spirit said unto Philip, Go near, and join
thyself to this chariot.

30 And Philip ran thither to him, and heard him read the prophet Esaias,
and said, Understandest thou what thou readest?

 31 And he said, How can I, except some MAN should GUIDE me? And he desired Philip that he would come up and sit with
him.

 32 The place of the scripture which he read was this, He
was led as a sheep to the slaughter; and like a lamb dumb before his shearer,
so opened he not his mouth:

 33 In his humiliation his judgment was taken away: and who
shall declare his generation? for his life is taken from the earth.

 34 And the eunuch answered Philip, and said, I pray thee,
of whom speaketh the prophet this? of himself, or of some other man?

 35 Then Philip opened his mouth, and began AT THE SAME SCRIPTURE, and preached unto him Jesus." Acts 8:29-35

Philip preached Christ without a New Testament Epistle and began his preaching from the "prophet," Isaiah. (Acts 8:35)

How could the Apostles preach a 'New,' thing from the same, "Old Testament?" And if they could preach and others could hear and receive the Word, what would be the purpose of pretending that the New Testament by itself is even a good idea?

Perhaps this is why Jesus, had the prophet Isaiah to write (if
you are a 'New Testament Christian,' then you probably don't know a lot about
Isaiah): "To the law AND to the testimony: if they speak not according
to this word, it is because there is no light in them." Isaiah 8:20 

The May the Lord add a blessing to the study of His Word... In Jesus name. 

LOCKSMIF... Knowledge is the key