At thy right hand there are pleasures for evermore (Ps. 16: 11)
After this manner therefore pray ye: Our Father which art in heaven, Hallowed be thy name. Thy kingdom come. Thy will be done in earth, as it is in heaven. Give us this day our daily bread. And forgive us our debts, as we forgive our debtors. And lead us not into temptation, but deliver us from evil: For thine is the kingdom, and the power, and the glory, for ever. Amen (Matt. 6:9-13).
We were created by God to inhabit both space and time, and to do so forever. Because of the fall, and the curse that resulted from the fall, we have an optical illusion created by death. That illusion is that our lives are like those of mere beasts. We breath our last, and then we are done. “For that which befalleth the sons of men befalleth beasts; even one thing befalleth them: as the one dieth, so dieth the other; yea, they have all one breath; so that a man hath no preeminence above a beast: for all is vanity (Eccl. 3:19). That is the way things appear under the sun.
The word forever here is literally into the ages. In other places, the idiom that expresses this is ages upon ages. God is the one who stacks eons upon eons, and then invites us to live there.
In English we make a distinction between the word eternal and the word everlasting. God is eternal, outside time, and so the word eternal does not presuppose time. The word everlasting does presuppose time, and refers to a continued existence down throughout all of that time. By the grace of God, we are privileged to share in both the quantity of His overflowing life (everlasting) and also in the quality of it (eternal). We don’t quite understand how it can all work (it does not yet appear how we shall be, 1 John 3:2), and the language used in Scripture is quite metaphorical (age upon age). But we can understand one thing about it, even though it is negatively stated. God’s goodness to His people will never stop.