Examples of Thankfulness in the Bible

 Daniel 2:19-23

19 Then was the secret revealed unto Daniel in a night vision. Then Daniel blessed the God of heaven. 20 Daniel answered and said, Blessed be the name of God for ever and ever: For wisdom and might are his:
21  And he changeth the times and the seasons: He removeth kings, and setteth up kings: He giveth wisdom unto the wise, And knowledge to them that know understanding:

22  He revealeth the deep and secret things: He knoweth what is in the darkness, And the light dwelleth with him.
23  I thank thee, and praise thee, O thou God of my fathers, Who hast given me wisdom and might, And hast made known unto me now what we desired of thee: For thou hast now made known unto us the king’s matter.  Daniel 2:19–23.

2 Corinthians 9:11-12

11 Being enriched in every thing to all bountifulness, which causeth through us thanksgiving to God. 12 For dthe administration of this service not only supplieth the want of the saints, but is abundant also by many thanksgivings unto God; 2 Cor 9:11–12.

Luke 17:11-19 The 10 Lepers