2 Timothy 1:13

Holding fast the faithful word as he hath been taught, that he may be able by sound doctrine both to exhort and to convince the gainsayers.

But continue thou in the things which thou hast learned and hast been assured of, knowing of whom thou hast learned them;

Those things, which ye have both learned, and received, and heard, and seen in me, do: and the God of peace shall be with you.

But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you.

And the things that thou hast heard of me among many witnesses, the same commit thou to faithful men, who shall be able to teach others also.

Behold, I come quickly: hold that fast which thou hast, that no man take thy crown.

Remember therefore how thou hast received and heard, and hold fast, and repent. If therefore thou shalt not watch, I will come on thee as a thief, and thou shalt not know what hour I will come upon thee.

And the grace of our Lord was exceeding abundant with faith and love which is in Christ Jesus.

That good thing which was committed unto thee keep by the Holy Ghost which dwelleth in us.

Let us hold fast the profession of our faith without wavering; (for he is faithful that promised;)

Beloved, when I gave all diligence to write unto you of the common salvation, it was needful for me to write unto you, and exhort you that ye should earnestly contend for the faith which was once delivered unto the saints.

An instructor of the foolish, a teacher of babes, which hast the form of knowledge and of the truth in the law.

If any man teach otherwise, and consent not to wholesome words, even the words of our Lord Jesus Christ, and to the doctrine which is according to godliness;

Only let your conversation be as it becometh the gospel of Christ: that whether I come and see you, or else be absent, I may hear of your affairs, that ye stand fast in one spirit, with one mind striving together for the faith of the gospel;

Buy the truth, and sell it not; also wisdom, and instruction, and understanding.

But speak thou the things which become sound doctrine:

For whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons, and if there be any other thing that is contrary to sound doctrine;

My son, let not them depart from thine eyes: keep sound wisdom and discretion:

Prove all things; hold fast that which is good.

But Christ as a son over his own house; whose house are we, if we hold fast the confidence and the rejoicing of the hope firm unto the end.

Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession.

He taught me also, and said unto me, Let thine heart retain my words: keep my commandments, and live. Get wisdom, get understanding: forget it not; neither decline from the words of my mouth. Forsake her not, and she shall preserve thee: love her, and she shall keep thee. Wisdom is the principal thing; therefore get wisdom: and with all thy getting get understanding. Exalt her, and she shall promote thee: she shall bring thee to honour, when thou dost embrace her.

But that which ye have already hold fast till I come.

Sound speech, that cannot be condemned; that he that is of the contrary part may be ashamed, having no evil thing to say of you.

Since we heard of your faith in Christ Jesus, and of the love which ye have to all the saints,

She is a tree of life to them that lay hold upon her: and happy is every one that retaineth her.

Take fast hold of instruction; let her not go: keep her; for she is thy life.

Counsel is mine, and sound wisdom: I am understanding; I have strength.