2 Peter 2:19
They promise them liberty, whilst they themselves are slaves of corruption: for every one is enslaved by that which overcomes him.
1 Peter 2:16
Live as freemen, yet do not use your freedom as a covering of wickedness; but as the servants of God.
Jude 1:3
Beloved, making all haste to write to you, concerning the common salvation, I thought it necessary to write to you, exhorting you to contend earnestly for the faith formerly delivered to the saints.
Jude 1:20-21
But you, beloved, building up yourselves on your most holy faith, praying with a holy spirit;
Revelation 2:25
Nevertheless, what you have, hold fast till I come.
Revelation 3:3
Remember, therefore, how you have received and heard, and hold fast, and reform: therefore, unless you are watchful, I will come upon you as thief, and you shall not know what hour I will come upon you.