2 Thessalonians 2:15
Therefore, brethren, stand fast and retain the doctrine which ye have been taught, whether by word or our epistle.
1 Corinthians 11:2
Now I praise you, brothers, that ye remember me in all things and retain my instructions the same as I spoke unto you.
1 Corinthians 16:13
Watch ye, stand fast in the faith, be brave, be strong.
2 Thessalonians 2:2
that ye not be easily shaken in understanding or be troubled neither by spirit nor by word nor by letter as from us, as if the day of Christ is at hand.
2 Thessalonians 3:6
Now we charge you, brethren, in the name of our Lord Jesus Christ, that ye withdraw yourselves from every brother that walks out of order, and not after the doctrine which ye received of us.
Romans 16:17
And I beseech you, brethren, mark those who cause dissensions and offences outside of the doctrine which ye have learned, and avoid them.
1 Corinthians 15:58
Therefore, my beloved brothers, be ye steadfast, unmovable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord.
Philippians 4:1
Therefore, my brethren dearly beloved and longed for, my joy and crown, so stand fast in the Lord, my dearly beloved.
2 Thessalonians 3:14
And if anyone does not hearken unto our word by this epistle, note that one and do not join with him, that he may be ashamed.
Jude 1:3
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 persevere in the faith which was given once unto the saints.