Matthew Poole and continuators on Galatians 6:16

16 And as many as walk according to this rule , peace be on them, and mercy , and upon the Israel of God .

He either meaneth the Rule of Scripture, the whole Word of God; or the Doctrine which he had taught them throughout this Epistle, or what he had said in the words immediately going before, where the Apostle had given them this Rule, not to regard either Circumcision or uncircumcision, or any thing in the Flesh, but only the change of their hearts.

To these he either Prophesieth Peace and Mercy, or he Prayeth Peace and Mercy for them, under which large terms, he comprehendeth all good things whether internal or external.

Upon the true Israelites, whom he calleth the Israel of God; hereby intimating and confirming the Truth of what he had said, Rom. 2.28, 29. and what our Saviour had said of Nathaniel, Iohn 1.47. calling him an Israelite indeed because in him was no guile. And establishing a distinction betwixt such as were so really, and those who were only Israelites in name, because descended from Iacob to whom God gave the name of Israel. Hereby also checking the vanity of the Jews, who gloried in the name of Israelites, and thought there could no water come out of the Fountains of Israel which God would cast away. The Apostle doth not promise, or prophesie Mercy and Peace to all Israelites, but only to the Israel of God; that is, to Believers that received, and imbraced Jesus Christ offered in the Gospel.

Marginal references: Psal. 125.5.; Rom. 4.12. Chap. 3.29.