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.
That he who - rather, "He who," etc.
Blesseth himself in the earth - (Psalms 72:17; Jeremiah 4:2.)
Shall bless himself in the God of truth - very God, as opposed to false gods: Hebrew, Amen: the very name of Messiah (2 Corinthians 1:20; Revelation 3:14), faithful to His promises (John 1:17; John 6:32). Real, substantial, spiritual, eternal, as opposed to the shadowy types of the law.
He that sweareth in the earth shall swear by the God of truth - God alone shall be appealed to as God (Isaiah 19:18; Deuteronomy 6:13; Psalms 63:11).
Because the former troubles are forgotten - i:e., sins, provocations (Lowth). Rather, calamities ( hatsaarowt (H6869 ), straits) caused by your sins: so far from these visiting you again, the very remembrance of them is "hid from mine eyes" by the magnitude of the blessings I will confer on you (Isaiah 65:17 , etc.) (Maurer).