How many times is the word gratitude mentioned in the Bible?

Answer 1

2 times

Acts 24:3

Everywhere and in every way, most excellent Felix, we acknowledge this with profound gratitude.

Acts 24:2-4 (in Context) Acts 24 (Whole Chapter)

Colossians 3:16

Let the word of Christ dwell in you richly as you teach and admonish one another with all wisdom, and as you sing psalms, hymns and spiritual songs with gratitude in your hearts to God.