'Forever' in the Bible

Behold, I am about to build a house for the name of Yahweh my God, to dedicate it to him, and to burn before him incense of sweet spices, and for the continual show bread, and for the burnt offerings morning and evening, on the Sabbaths, and on the new moons, and on the set feasts of Yahweh our God. This is [an ordinance] forever to Israel.

it happened, when the trumpeters and singers were as one, to make one sound to be heard in praising and thanking Yahweh; and when they lifted up their voice with the trumpets and cymbals and instruments of music, and praised Yahweh, [saying], "For he is good; for his loving kindness endures forever!" that then the house was filled with a cloud, even the house of Yahweh,

But I have built you a house of habitation, and a place for you to dwell in forever."

For now have I chosen and made this house holy, that my name may be there forever; and my eyes and my heart shall be there perpetually.

Blessed be Yahweh your God, who delighted in you, to set you on his throne, to be king for Yahweh your God: because your God loved Israel, to establish them forever, therefore made he you king over them, to do justice and righteousness."

They spoke to him, saying, "If you are kind to this people, and please them, and speak good words to them, then they will be your servants forever."

Ought you not to know that Yahweh, the God of Israel, gave the kingdom over Israel to David forever, even to him and to his sons by a covenant of salt?

Didn't you, our God, drive out the inhabitants of this land before your people Israel, and give it to the seed of Abraham your friend forever?

When he had taken counsel with the people, he appointed those who should sing to Yahweh, and give praise in holy array, as they went out before the army, and say, Give thanks to Yahweh; for his loving kindness endures forever.

Now don't be stiff-necked, as your fathers were; but yield yourselves to Yahweh, and enter into his sanctuary, which he has sanctified forever, and serve Yahweh your God, that his fierce anger may turn away from you.

He built altars in the house of Yahweh, of which Yahweh said, "My name shall be in Jerusalem forever."

He set the engraved image of the idol, which he had made, in the house of God, of which God said to David and to Solomon his son, "In this house, and in Jerusalem, which I have chosen out of all the tribes of Israel, will I put my name forever: