ζέω zéō

Meaning

to be hot (boil, of liquids; or glow, of solids), i.e. (figuratively) be fervid (earnest)

In the King James Version: be fervent

Derivation: a primary verb;

Where it is used

• Acts 18:25 He had been instructed in the way of the Lord and was fervent in spirit. He spoke and taught accurately about Jesus, though he knew only the baptism of John.
• Romans 12:11 Do not let your zeal subside; keep your spiritual fervor, serving the Lord.