These three verses might come from an early Christian creed (a formal statement of beliefs). These verses emphasize the unity that all believers share.
Despite their ethnic differences, Jewish and non-Jewish Christians have one Lord and one faith. Because of this, they should live together in unity.
one God and Father of all: (see 1 Corinthians 8:6; 15:28).
who is over all and through all and in all: God is especially present in the lives of believers (see 1 Corinthians 6:19; 2 Corinthians 13:5; Galatians 2:20; Colossians 1:27; compare John 14:16–17, 23; 15:4–5).