Whoever invokes a blessing in the land will do so by the one true God; whoever takes an oath in the land will swear by the one true God. For the past troubles will be forgotten and hidden from my eyes.
NIV
So [it shall be] that he who invokes a blessing on himself in the land shall do so by saying, May the God of truth and fidelity [the Amen] bless me; and he who takes an oath in the land shall swear by the God of truth and faithfulness to His promises [the Amen], because the former troubles are forgotten and because they are hidden from My eyes. [II Cor. 1:20; Rev. 3:14.]AMP
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.
KJV