Luke 1:50

He shows His mercy from age to age to those who fear him.

Romans 15:8-9

Yes, I mean that Christ has become a servant to Israel to prove God's truthfulness, to make valid His promises to our forefathers,

Titus 1:2

in the hope of eternal life which God, who never lies, promised ages ago

Hebrews 6:13-18

For when God made His promise to Abraham, He took an oath by Himself, since He had no one greater by whom He could take it,

Treasury of Scripture Knowledge

Summary

For the LORD is good; his mercy is everlasting; and his truth endureth to all generations.

His mercy

Bible References

His mercy

Luke 1:50
He shows His mercy from age to age to those who fear him.

And his truth

Romans 15:8
Yes, I mean that Christ has become a servant to Israel to prove God's truthfulness, to make valid His promises to our forefathers,
Titus 1:2
in the hope of eternal life which God, who never lies, promised ages ago
Hebrews 6:13
For when God made His promise to Abraham, He took an oath by Himself, since He had no one greater by whom He could take it,