God has put eternity into your heart

 “He has made everything beautiful in its time. Also, he has put eternity into man's heart, yet so that he cannot find out what God has done from the beginning to the end.” (Eccles. 3:11 ESV)

Eternity: Forever and ever, infinite duration, time without end, endless, everlasting, perpetuity.

God of eternity from everlasting to everlasting

“Before the mountains were brought forth, or ever you had formed the earth and the world, from everlasting to everlasting you are God.” (Psalm 90:2 ESV)

God inhabits eternity

“For thus says the One who is high and lifted up, who inhabits eternity, whose name is Holy: “I dwell in the high and holy place, and also with him who is of a contrite and lowly spirit, to revive the spirit of the lowly, and to revive the heart of the contrite.” (Isa. 57:15 ESV)

Suffering and punishment of the unrighteous lasts for eternity

“They will suffer the punishment of eternal destruction, away from the presence of the Lord and from the glory of his might.” (2 Thess. 1:9 ESV)

“And these will go away into eternal punishment, but the righteous into eternal life.” (Matt. 25:46 ESV)

God gives life to last for eternity

“For God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life. For God did not send his Son into the world to condemn the world, but in order that the world might be saved through him.” (John 3:16-17 ESV)

“Truly, truly, I say to you, whoever hears my word and believes him who sent me has eternal life. He does not come into judgment, but has passed from death to life.” (John 5:24 ESV)

Therefore...

“May his name endure forever, his fame continue as long as the sun! May people be blessed in him, all nations call him blessed!” (Psalm. 72:17 esv)

“Blessed be the Lord, the God of Israel, from everlasting to everlasting! Amen and Amen.” (Psalm 41:13 ESV)