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.

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.

Revelation 2:25

Nevertheless, what you have, hold fast till I come.

Revelation 3:11

I come quickly: keep that which you have, that no man take your crown.

Treasury of Scripture Knowledge

Summary

Hold fast the form of sound words, which thou hast heard of me, in faith and love which is in Christ Jesus.

Bible References

Hold

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.
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.