Should you serve God alone? Bible Contradictions

This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

Then saith Jesus unto him, Get thee hence, Satan: for it is written, Thou shalt worship the Lord thy God, and him only shalt thou serve.

Neither be ye called masters: for one is your Master, [even] Christ.

Servants, be obedient to them that are [your] masters according to the flesh, with fear and trembling, in singleness of your heart, as unto Christ;

Wives, submit yourselves unto your own husbands, as it is fit in the Lord.

Children, obey [your] parents in all things: for this is well pleasing unto the Lord.

Servants, obey in all things [your] masters according to the flesh; not with eyeservice, as menpleasers; but in singleness of heart, fearing God:

Let as many servants as are under the yoke count their own masters worthy of all honour, that the name of God and [his] doctrine be not blasphemed.

[Exhort] servants to be obedient unto their own masters, [and] to please [them] well in all [things]; not answering again;

Servants, [be] subject to [your] masters with all fear; not only to the good and gentle, but also to the froward.