Heb 6:1 Therefore leaving the principles of the doctrine of Christ,; not laying again the foundation of repentance from dead works, and of faith toward God,
Heb 6:2 Of the doctrine of baptisms, and of laying on of hands, and of resurrection of the dead, and of eternal judgment.
(2Co 7:1) Having therefore these promises, dearly beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God.
You see we are to perfect our holiness because of our fear and respect for the Lord God.
Eph 2:20 And(we) are built upon the foundation of the apostles and prophets, Jesus Christ himself being the chief corner [stone];
not laying again the foundation
(1Co 3:10) According to the grace of God which is given unto me, as a wise masterbuilder, I have laid the foundation, and another buildeth thereon. But let every man take heed how he buildeth thereupon.
(1Co 3:11) For other foundation can no man lay than that is laid, which is Jesus Christ.
(1Co 3:12) Now if any man build upon this foundation gold, silver, precious stones, wood, hay, stubble;
(1Co 3:13) Every man's work shall be made manifest: for the day shall declare it, because it shall be revealed by fire; and the fire shall try every man's work of what sort it is.
We are to build up our spiritual character and put down our fleshly desires and proclivities to build a spiritual house that will withstand the fire that God will send to test our work.
2Ti 2:19 Nevertheless the foundation of God standeth sure, having this seal, The Lord knoweth them that are his. And, Let every one that nameth the name of Christ depart from iniquity.
So departing from iniquity (sin) is the starting point to build on the foundation of doctrine that we have been given.
2Ti 2:20 But in a great house there are not only vessels of gold and of silver, but also of wood and of earth; and some to honour, and some to dishonour.
2Ti 2:21 If a man therefore purge himself from these, he shall be a vessel unto honour, sanctified, and meet for the master's use, [and] prepared unto every good work.
If we purge ourselves from iniquity and the vain
squabbling over extraneous doctrine that was also discussed in this chapter,
we can build a vessel of honor. Notice these comments about "new doctrines,
2Ti 2:14 Of these things put [them] in remembrance, charging [them] before the Lord that they strive not about words to no profit, [but] to the subverting of the hearers.
2Ti 2:15 Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
2Ti 2:16 But shun profane [and] vain babblings: for they will increase unto more ungodliness.
2Ti 2:22 Flee also youthful lusts: but follow righteousness, faith, charity, peace, with them that call on the Lord out of a pure heart.
2Ti 2:23 But foolish and unlearned questions avoid, knowing that they do gender strifes.
So we begin to see that what happens after we have a solid foundation of good doctrine is that we begin to take action on our part to build our house (our part of the spiritual temple of God)
This action on our part is where we are tested, that is our work is tested, because it is where we encounter resistance from satan and trials and temptations to perfect us in our journey.
Here is where we begin to use the tools of spiritual warfare to grow in grace and knowledge of Christ. We begin to walk as Christ walked and as we do so we increase in God's Grace (favor). In 2 Corinthinans 10:3-5 Paul says;
Rom 12:2 And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what [is] that good, and acceptable, and perfect, will of God.
Recompense to no man evil for evil.
Provide things honest in the sight of all men.
live peaceably with all men.
avenge not yourselves
love your enemy
ovecome evil with good
Rom 13:14 But
put ye on the Lord Jesus Christ, and make not provision for the flesh, to
[fulfil] the lusts [thereof].
Here is how we "grow in the knowledge of Christ" by learning to walk as He walked in oberdiance to the Fathers's Law.
Study carefully the 12th and 13th chapters of Romans because Paul shows you here the actions that you need to be taking in order to build on the foundation of doctrine that was given us.
Here you will build your spiritual house of God. Here is how you will grow in grace (the favor of God) and the knowledge of Christ (Learning to live this life as He lived it, to walk as He walked) and thereby growing in the knowledge of Christ.
This is how we will fulfill the command to Grow in Grace and Knowledge. By living our lives as a daily sacrifice as Christ lived His. Here is where we will be building eternal character and love.
Not by chasing after every wind of doctrine. Doctrine is not how we grow in Christ. Love is how we grow.
1Co 13:1 I may be able to speak the languages of human beings and even of angels, but if I have no love, my speech is no more than a noisy gong or a clanging bell.
1Co 13:2 I may have the gift of inspired preaching; I may have all knowledge and understand all secrets; I may have all the faith needed to move mountains---but if I have no love, I am nothing...GNB
If you compare Romans 12 and I Corinthians 13 (The Love Chapter) you will see that the actions we take to daily renew our minds with Christ in Romans 12 are very similar to the traits of Agape Love we find in the 13th chapter of 1 Corinthians..
1Co 13:11 When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things.