We know that every one being engendered of God does not sin; but the one engendered of God keeps himself, and the wicked one does not touch him. (I John 5:18 [ABP])
for everyone born of God overcomes the world. This is the victory that has overcome the world, even our faith. (1 John 5:4 [NIV])
Whosoever is born of God doth not commit sin; for his seed remaineth in him: and he cannot sin, because he is born of God. (1 John 3:9 [KJV])
You need to study the scriptures you are using, be for you take them out of context. Starting with reading the WHOLE chapter of 1 John 3....
1John 3:2 Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.
It is saying, we are not there yet, (perfect), but when Jesus comes, then we will be, (perfect) like He is.
The word sinneth in the Greek is (amartano) That means morally disqualified. Now, in that context, if you are in Christ, you will not be "morally disqualified" but that does not mean you will not miss it, or stumble now and again!
Have you ever lied?
Have you ever been mean so someone?
Have you ever broken a law (including speeding)?
Have you ever done anything not in faith?
Have you ever dishonored someone in authority over you?
P.S. if we would never sin again we would not need Gods continued grace! I for one am very thankful for His grace - and His mercy that is made new every morning.