What does it mean to be a “new creation”?

• The Basis of the New Creation, “…For neither circumcision counts for anything, nor uncircumcision, but a new creation…” (15)
• The Behavior of the New Creation (14,15), “…As for all who walk by this rule…peace and mercy be upon them…” (16)
• The Breadth of the New Creation (16), “…and upon the Israel of God…” (16)