James 1:17

every thing that is valuable, every gift that leads to perfection is deriv'd from heaven, it descends from that original light, which knows no change, no shadow, or decline:

Titus 1:2

and gives the expectation of eternal life, which the God of veracity promised so many ages ago;

Romans 11:29

for the divine gifts and vocation are irrevocable.

Hebrews 6:18

that by two immutable things in which it was impossible for God to deceive us, we, who have no other refuge to fly to, but to maintain our present hopes,

Luke 21:33

heaven and earth shall fail sooner than my predictions shall fail.

Treasury of Scripture Knowledge

Summary

God is not a man, that he should lie; neither the son of man, that he should repent: hath he said, and shall he not do it? or hath he spoken, and shall he not make it good?

General references

Bible References

General references

Luke 1:57
When Elizabeth had gone her full time, she was delivered of a son.
Acts 15:18
he that does all these things, is the Lord himself that has said it." for the works of God are all known to him from the beginning of the world.
Romans 11:29
for the divine gifts and vocation are irrevocable.