'Forever' in the Bible

Observe, I am about to build a house for the Name of the Lord my God, dedicated to Him, to burn fragrant incense [of sweet spices] before Him, to set out the showbread continually, and to offer burnt offerings morning and evening, on Sabbaths, New Moons, and on the festivals of the Lord our God, as ordained forever in Israel.

in unison when the trumpeters and singers were to make themselves heard with one voice praising and thanking the Lord, and when they raised their voices accompanied by the trumpets and cymbals and [other] instruments of music, and when they praised the Lord, saying, “For He is good, for His mercy and lovingkindness endure forever,” then the house of the Lord was filled with a cloud,

“I have built You a lofty house,A place for You to dwell forever.”

When all the people of Israel saw how the fire came down and saw the glory and brilliance of the Lord upon the house, they bowed down on the stone pavement with their faces to the ground, and they worshiped and praised the Lord, saying, “For He is good, for His mercy and lovingkindness endure forever.”

The priests stood at their posts [ready for service], and the Levites also, with the musical instruments of the Lord which King David had made to praise the Lord, saying, “For His lovingkindness and mercy endure forever,” whenever David offered praise through their ministry. The priests were opposite the Levites blowing the trumpets and all Israel was standing.

For now I have chosen and sanctified and set apart for My purpose this house that My Name may be here forever, and My eyes and My heart will be here perpetually.

Blessed be the Lord your God, who delighted in you, setting you on His throne as king for the Lord your God; because your God loved Israel, establishing them forever, therefore He made you king over them, to do justice and righteousness.”

They answered him, saying, “If you are kind to these people and please them and speak good words to them, then they will be your servants forever.”

Do you not know that the Lord God of Israel, gave rule over Israel forever to David and to his sons by a covenant of salt [a permanent pact, extending to each generation of Israel]?

O our God, did You not drive out the inhabitants of this land before Your people Israel and give it forever to the descendants of Your friend Abraham?

When he had consulted with the people, he appointed those who sang to the Lord and those who praised Him in their holy (priestly) attire, as they went out before the army and said, “Praise and give thanks to the Lord, for His mercy and lovingkindness endure forever.”

Yet the Lord would not destroy the house of David because of the covenant which He had made with David, and because He had promised to give a lamp to him and to his sons forever.

Now do not stiffen your neck [becoming obstinate] like your fathers, but yield to the Lord and come to His sanctuary which He has sanctified and set apart forever, and serve the Lord your God, so that His burning anger will turn away from you.

He built [pagan] altars in the house of the Lord, of which the Lord had said, “My Name shall be in Jerusalem forever.”

Then he set the carved image of the idol which he had made in the house of God, of which God had said to David and to Solomon his son, “In this house and in Jerusalem, which I have chosen from all the tribes of Israel, I will put My Name [and the symbol of my Presence] forever;