'Surely' in the Bible

Surely the Lord Jehovah will do nothing, except he reveal his secret unto his servants the prophets.

but seek not Beth-el, nor enter into Gilgal, and pass not to Beer-sheba: for Gilgal shall surely go into captivity, and Beth-el shall come to nought.

For thus Amos saith, Jeroboam shall die by the sword, and Israel shall surely be led away captive out of his land.

therefore thus saith Jehovah: Thy wife shall be a harlot in the city, and thy sons and thy daughters shall fall by the sword, and thy land shall be divided by line; and thou thyself shalt die in a land that is unclean, and Israel shall surely be led away captive out of his land.

Jehovah hath sworn by the excellency of Jacob, Surely I will never forget any of their works.