John 3:16 is the first verse that I memorized as a child. The first chapter that I memorized was Psalm 23. The third chapter that I memorized was Psalm 100.
I typically give reference the New Living Translation, but for Psalm 100, I am giving reference to the New King James Version.
“Make a joyful shout to the Lord, all you lands. Serve the Lord with gladness; Come before His presence with singing. Know that the Lord, He is God; It is He who made us and not we ourselves; We are His people and the sheep of His pasture.
Enter into His gates with thanksgiving, and into His courts with praise. Be thankful to Him and Bless His name. For the Lord is good; His mercy is everlasting, And His truth endures though all generations.” (NKJV)