God's chosen people should be grateful and tell everyone about his greatness.
1 Chronicles 16:7-36 On that day David gave to Asaph and his fellow Levites this song of thanksgiving to the LORD:
Give thanks to the LORD and proclaim His greatness. Let the whole world know what He has done. Sing to Him; yes, sing His praises. Tell everyone about His wonderful deeds. Exult in His holy name; rejoice, you who worship the LORD. Search for the LORD and for His strength; continually seek Him. Remember the wonders He has performed, His miracles, and the rulings He has given, you children of His servant Israel, you descendants of Jacob, His chosen ones.
He is the LORD our God. His justice is seen throughout the land. Remember His covenant forever--the commitment He made to a thousand generations. This is the covenant He made with Abraham and the oath He swore to Isaac. He confirmed it to Jacob as a decree, and to the people of Israel as a never-ending covenant: "I will give you the land of Canaan as your special possession."
He said this when you were few in number, a tiny group of strangers in Canaan. They wandered from nation to nation, from one kingdom to another. Yet He did not let anyone oppress them. He warned kings on their behalf: "Do not touch My chosen people, and do not hurt My prophets."
Let the whole earth sing to the LORD! Each day proclaim the good news that He saves. Publish His glorious deeds among the nations. Tell everyone about the amazing things He does. Great is the LORD! He is most worthy of praise! He is to be feared above all gods. The gods of other nations are mere idols, but the LORD made the heavens! Honor and majesty surround Him; strength and joy fill His dwelling.
O nations of the world, recognize the LORD, recognize that the LORD is glorious and strong. Give to the LORD the glory He deserves! Bring your offering and come into His presence. Worship the LORD in all His holy splendor. Let all the earth tremble before Him. The world stands firm and cannot be shaken.
Let the heavens be glad, and the earth rejoice! Tell all the nations, "The LORD reigns!" Let the sea and everything in it shout His praise! Let the fields and their crops burst out with joy! Let the trees of the forest rustle with praise, for the LORD is coming to judge the earth.
Give thanks to the LORD, for He is good! His faithful love endures forever. Cry out, "Save us, O God of our salvation! Gather and rescue us from among the nations, so we can thank Your holy name and rejoice and praise You."
Praise the LORD, the God of Israel, who lives from everlasting to everlasting! And all the people shouted "Amen!" and praised the LORD.
Realizing our moment-by-moment dependence on God the Creator for our very existence makes it appropriate to live lives of devotion, commitment, gratitude, and loyalty toward him, and scandalous not to.In this season and all year long we should be overwhelmed with gratitude for the greatness of our God which is beyond our comprehension. Our gratitude should inspire us to worship, that is the only appropriate response for the deep level of gratitude that we should have to someone who has done so much for us.
—J. I. Packer, Christian theologian