This verse presents three reasons for praising and thanking the Lord (Psalms 100:4). First, He is good. When it comes to His children, He always does what is best for them. He is the very definition of all that is right, true, and righteous. Second, His love is loyal, steadfast, and everlasting. Third, God's faithfulness extends to every generation of the human race. 
The Lord is good. His mercy endures forever, and His faithfulness endures throughout all generations. Therefore, it is no surprise that we are called upon to make a joyful noise and sing praise to Him, who is the source of our salvation. It is no wonder that we are encouraged to serve our God with a joyful heart and to give him thanks and praise. It is no doubt that we are urged to come into His presence with overflowing gratitude and constantly invoke His holiness.
The only way we can truly know Him is to know Him for Who He is. We also need to reverently and joyfully contemplate all that He has accomplished for us and all that He has promised for the ages to come. Through faith in the Lord Jesus Christ, we have been able to take advantage of the rich promises that have been extended to us so lavishly. In light of this, we should express gratitude to God for all that covenant of grace has meant to us.

Dear Heavenly Father, You are truly a God who is generous and merciful, and I give full praise to Your name for Your faithfulness, kindness, goodness, and grace. Please allow me to know You personally and know Him intimately since He is our God and Savior. He made us, and we belong to Him. For all that You have done for me, I pray that I never lose my sense of awe and wonder. I pray that You will use me to Your glory and praise during my sojourn here on earth.
In Jesus's name I pray. Amen.