Truth Is An Entire Corpus or Unit

Teach all biblical doctrine, for all Truth is one unit, one body of Truth:

Mat 28:19  "Go therefore and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit,
Mat 28:20  teaching them to observe all that I commanded you; and lo, I am with you always, even to the end of the age."

Mat 22:40  "On these two commandments depend the whole Law and the Prophets."

Jas 2:9  But if you show partiality, you are committing sin and are convicted by the law as transgressors. 10  For whoever keeps the whole law and yet stumbles in one point, he has become guilty of all. 

Act 3:21  whom heaven must receive until the period of restoration of all things about which God spoke by the mouth of His holy prophets from ancient time.
Act 3:22  "Moses said, 'THE LORD GOD SHALL RAISE UP FOR YOU A PROPHET LIKE ME FROM YOUR BRETHREN; TO HIM YOU SHALL GIVE HEED in everything He says to you. 
Act 3:23  'And it shall be that every soul that does not heed that prophet shall be utterly destroyed from among the people.'

Act 5:19  But an angel of the Lord during the night opened the gates of the prison, and taking them out he said,
Act 5:20  "Go your way, stand and speak to the people in the temple the whole message of this Life." 

Act 20:20  how I did not shrink from declaring to you anything that was profitable, and teaching you publicly and from house to house,
Act 20:21  solemnly testifying to both Jews and Greeks of repentance toward God and faith in our Lord Jesus Christ.

Act 20:27  "For I did not shrink from declaring to you the whole purpose of God.

Tit 1:9  holding fast the faithful word which is in accordance with the teaching, that he may be able both to exhort in sound doctrine and to refute those who contradict.

2Ti 3:16  All Scripture is inspired by God and profitable for teaching, for reproof, for correction, for training in righteousness; 17  that the man of God may be adequate, equipped for every good work. 

1Ti 4:13  Until I come, give attention to the public reading of Scripture, to exhortation and teaching.

1Ti 6:12  Fight the good fight of faith; take hold of the eternal life to which you were called, and you made the good confession in the presence of many witnesses.

Jud 1:3  Beloved, while I was making every effort to write you about our common salvation, I felt the necessity to write to you appealing that you contend earnestly for the faith which was once for all delivered to the saints.