'Surely' in the Bible

according to all that we hearkened unto Moses in, so we hearken unto thee; surely Jehovah thy God is with thee as He hath been with Moses.

and they say unto Joshua, 'Surely Jehovah hath given into our hand all the land; and also, all the inhabitants of the land have melted at our presence.'

and surely ye have kept from the devoted thing, lest ye devote yourselves, and have taken from the devoted thing, and have made the camp of Israel become a devoted thing, and have troubled it;

'And surely, if the land of your possession is unclean, pass over for you unto the land of the possession of Jehovah, where the tabernacle of Jehovah hath tabernacled, and have possession in our midst; and against Jehovah rebel not, and against us rebel not, by your building for you an altar, besides the altar of Jehovah our God.