Hebrews 12:29 NLT
Since we are receiving a Kingdom that is unshakeable,
let us be thankful and please God by worshiping him with holy fear and awe.
For our God is a devouring fire.

We can be thankful that God answers our prayers
Isaiah 65:24
I will answer them before they even call to me.
While they are still talking about their needs, I will go ahead and answer their prayers!

We can be thankful for God’s provision for our needs
1 Thessalonians 5:17-18
Never stop praying. 
Be thankful in all circumstances, for this is God’s will for you who belong to Christ Jesus.

We can be thankful for God’s blessings
1 Chronicles 16:34
Give thanks to the Lord, for he is good!   His faithful love endures forever.

We can be thankful for God’s character and wondrous works
Psalm 7:17
I will thank the Lord because he is just; I will sing praise to the name of the Lord Most High.

We can be thankful for our brothers and sisters in Christ
1 Corinthians 1:4
 I always thank my God for you and for the gracious gifts he has given you,
   now that you belong to Christ Jesus.