'Eternity' in the Bible

I have seen that all [human] perfection has its limits [no matter how grand and perfect and noble];Your commandment is exceedingly broad and extends without limits [into eternity].

Your righteous testimonies are everlasting;Give me understanding [the ability to learn and a teachable heart] that I may live.

The fruit of the [consistently] righteous is a tree of life,And he who is wise captures and wins souls [for God—he gathers them for eternity].

He has made everything beautiful and appropriate in its time. He has also planted eternity [a sense of divine purpose] in the human heart [a mysterious longing which nothing under the sun can satisfy, except God]—yet man cannot find out (comprehend, grasp) what God has done (His overall plan) from the beginning to the end.

For to us a Child shall be born, to us a Son shall be given;And the government shall be upon His shoulder,And His name shall be called Wonderful Counselor, Mighty God,Everlasting Father, Prince of Peace.

Israel has been saved by the LordWith an everlasting salvation;You will not be put to shame or humiliatedfor all eternity.

For the high and exalted OneHe who inhabits eternity, Whose name is Holy says this,“I dwell on the high and holy place,But also with the contrite and humble in spiritIn order to revive the spirit of the humbleAnd to revive the heart of the contrite [overcome with sorrow for sin].

“But as for you, Bethlehem Ephrathah,Too little to be among the clans of Judah;From you One shall come forth for Me [who is] to be Ruler in Israel,His goings forth (appearances) are from long ago,From ancient days.”

The Jews said to Him, “Now we know that You have a demon [and are under its power]. Abraham died, and also the prophets; yet You say, ‘If anyone keeps My word, he will never, ever taste of death.’

And I give them eternal life, and they will never, ever [by any means] perish; and no one will ever snatch them out of My hand.

For to me, to live is Christ [He is my source of joy, my reason to live] and to die is gain [for I will be with Him in eternity].

Then we who are alive and remain [on the earth] will simultaneously be caught up (raptured) together with them [the resurrected ones] in the clouds to meet the Lord in the air, and so we will always be with the Lord!

Now to the King of the ages [eternal], immortal, invisible, the only God, be honor and glory forever and ever. Amen.

Therefore He is able also to save forever (completely, perfectly, for eternity) those who come to God through Him, since He always lives to intercede and intervene on their behalf [with God].

but grow [spiritually mature] in the grace and knowledge of our Lord and Savior Jesus Christ. To Him be glory (honor, majesty, splendor), both now and to the day of eternity. Amen.

to the only God our Savior, through Jesus Christ our Lord, be glory, majesty, dominion, and power, before all time and now and forever. Amen.

and the Ever-living One [living in and beyond all time and space]. I died, but see, I am alive forevermore, and I have the keys of [absolute control and victory over] death and of Hades (the realm of the dead).