That. So that.
he who blesseth, &c. Reference to Pentateuch (Genesis 22:18; Genesis 26:4).
truth. faithfulness. Compare 2 Corinthians 1:20.
shall swear, &c. Reference to Pentateuch (Deuteronomy 6:13).
Related Commentaries of Isaiah 65:16
Isaiah 65:16
16 That he who blesseth himself in the earth shall bless himself in the God of truth; and he that sweareth in the earth shall swear by the God of truth; because the former troubles are forgotten, and because they are hid from mine eyes.