Luke 1:50

and his name is holy, and his mercy is on them that fear Him, unto all generations.

Romans 15:8-9

Now Jesus Christ was a minister of the circumcision for the manifestation of the truth of God, to confirm the promises made to the fathers:

Titus 1:2

in hope of eternal life, which God, who cannot lie, promised before all ages;

Hebrews 6:13-18

For when God made the promise to Abraham, because He could swear by no greater, He sware by Himself, saying,

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
and his name is holy, and his mercy is on them that fear Him, unto all generations.

And his truth

Romans 15:8
Now Jesus Christ was a minister of the circumcision for the manifestation of the truth of God, to confirm the promises made to the fathers:
Titus 1:2
in hope of eternal life, which God, who cannot lie, promised before all ages;
Hebrews 6:13
For when God made the promise to Abraham, because He could swear by no greater, He sware by Himself, saying,