Psalm 107:1 - Give thanks to the Lord, for He is good, His faithful love endures forever.  

Hebrews 13:15 - Therefore, let us offer through Jesus a continual sacrifice of praise to God, proclaiming our allegiance to His name.  

1 Thess. 5:18 - Be thankful in all circumstances, for this is God's will for you who belong to Christ.  

Psalm 100:4 - Enter into His gates with Thanksgiving and into His courts with praise.