"Contending for the Faith" (Jude 3)

Jude 3 (ESV)

Beloved, although I was very eager to write to you about our common salvation, I found it necessary to write appealing to you to contend for the faith that was once for all delivered to the saints.

1 Corinthians 11:23 ESV

For I received from the Lord what I also delivered to you, that the Lord Jesus on the night when he was betrayed took bread,

1 Corinthians 15:1 ESV

Now I would remind you, brothers, of the gospel I preached to you, which you received, in which you stand,

1 Corinthians 15:3 ESV

For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures,

2 Thessalonians 2:15 ESV

So then, brothers, stand firm and hold to the traditions that you were taught by us, either by our spoken word or by our letter.

2 Timothy 1:14 ESV

By the Holy Spirit who dwells within us, guard the good deposit entrusted to you.

Traditio - “to hand down to another.”