'Fervor' in the Bible

His disciples remembered that it is written [in the Scriptures], “Zeal (love, concern) for Your house [and its honor] will consume Me.”

He had been instructed in the Lord's way, and with spiritual fervor he kept speaking and teaching accurately about Jesus, although he knew only about John's baptism.

Be on guard; stand firm in your faith [in God, respecting His precepts and keeping your doctrine sound]. Act like [mature] men and be courageous; be strong.

for we walk by faith, not by sight [living our lives in a manner consistent with our confident belief in God’s promises]—

But My righteous one [the one justified by faith] shall live by faith [respecting man’s relationship to God and trusting Him];And if he draws back [shrinking in fear], My soul has no delight in him.

For by this [kind of] faith the men of old gained [divine] approval.