Hebrews 9:17

for a will and testament takes effect [only] at death, since it is never in force as long as the one who made it is alive.

Galatians 3:15

Brothers and sisters, I speak in terms of human relations: even though a last will and testament is just a human covenant, yet when it has been signed and made legally binding, no one sets it aside or adds to it [modifying it in some way].

Genesis 48:21

Then Israel said to Joseph, “Behold, I am about to die, but God will be with you, and bring you back to [Canaan] the land of your fathers.

John 14:27

Peace I leave with you; My [perfect] peace I give to you; not as the world gives do I give to you. Do not let your heart be troubled, nor let it be afraid. [Let My perfect peace calm you in every circumstance and give you courage and strength for every challenge.]

Treasury of Scripture Knowledge

Summary

For a testament is of force after men are dead: otherwise it is of no strength at all while the testator liveth.

General references

Bible References

General references

Genesis 48:21
Then Israel said to Joseph, “Behold, I am about to die, but God will be with you, and bring you back to [Canaan] the land of your fathers.
John 14:27
Peace I leave with you; My [perfect] peace I give to you; not as the world gives do I give to you. Do not let your heart be troubled, nor let it be afraid. [Let My perfect peace calm you in every circumstance and give you courage and strength for every challenge.]