21 being fully persuaded that God had power to do what he had promised.
2 Corinthians 1:20
20 For no matter how many promises God has made, they are “Yes” in Christ. And so through him the “Amen” is spoken by us to the glory of God.
16 For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.