Jude 3 New King James Version (NKJV)
Contend for the Faith
3 Beloved, while I was very diligent to write to you concerning our common salvation, I found it necessary to write to you exhorting you to contend earnestly for the faith which was once for all delivered to the saints.
Jude 3 New Revised Standard Version Catholic Edition (NRSVCE)
Occasion of the Letter
3 Beloved, while eagerly preparing to write to you about the salvation we share, I find it necessary to write and appeal to you to contend for the faith that was once for all entrusted to the saints.