Hath walked in my statutes, and hath kept my judgments, to deal truly; he is just, he shall surely live, saith the Lord GOD.
To deal truly - with integrity.
He shall surely live - literally, live in life. He shall prosper in this life, but still more in the life to come (Proverbs 3:1-2, "Length of days, and long life, and peace, shall they (my law and my commandments) add to thee;" Amos 5:4).