'Ever' in the Bible

Then Abner called to Joab, and said, Shall the sword devour for ever? knowest thou not that it will be bitterness in the latter end? how long shall it be then, ere thou bid the people return from following their brethren?

And afterward, when David heard it, he said, I and my kingdom are guiltless before Jehovah for ever of the blood of Abner the son of Ner:

He shall build a house for my name, and I will establish the throne of his kingdom for ever.

And thy house and thy kingdom shall be made sure for ever before thee: thy throne shall be established for ever.

And thou didst establish to thyself thy people Israel to be a people unto thee for ever; and thou, Jehovah, becamest their God.

And now, O Jehovah God, the word that thou hast spoken concerning thy servant, and concerning his house, confirm thou it for ever, and do as thou hast spoken.

And let thy name be magnified for ever, saying, Jehovah of hosts is God over Israel; and the house of thy servant David shall be established before thee.

now therefore let it please thee to bless the house of thy servant, that it may continue for ever before thee; for thou, O Lord Jehovah, hast spoken it: and with thy blessing let the house of thy servant be blessed for ever.