Proverbs 27:1

Do not boast yourself of tomorrow, for you do not know what a day may bring forth.

Luke 12:19-20

And I will say to my soul, Soul, you have many goods laid up for many years. Take your ease, eat drink and be merry.

James 4:13-16

Come now, those saying, Today or tomorrow we will go into such a city and spend a year there, and we will trade and will make a profit,

1 Samuel 28:19

And, Jehovah will also deliver Israel with you into the hand of the Philistines. And tomorrow you and your sons shall be with me. Jehovah also shall deliver the army of Israel into the hand of the Philistines.

Psalm 95:7

For He is our God, and we are the people of His pasture, and the sheep of His hand. Today if you will hear His voice,

Isaiah 56:12

They say, come, Let us take wine, and let us gulp strong drink; and tomorrow shall be like today, and much more abundant.

2 Corinthians 6:2

(For He says, "In an acceptable time I heard you, and in a day of salvation, I helped you;" Behold, now is the accepted time. Behold, now is the day of salvation.)

Treasury of Scripture Knowledge

Summary

Boast not thyself of to morrow; for thou knowest not what a day may bring forth.

Bible References

Boast

Psalm 95:7
For He is our God, and we are the people of His pasture, and the sheep of His hand. Today if you will hear His voice,
Isaiah 56:12
They say, come, Let us take wine, and let us gulp strong drink; and tomorrow shall be like today, and much more abundant.
Luke 12:19
And I will say to my soul, Soul, you have many goods laid up for many years. Take your ease, eat drink and be merry.
2 Corinthians 6:2
(For He says, "In an acceptable time I heard you, and in a day of salvation, I helped you;" Behold, now is the accepted time. Behold, now is the day of salvation.)
James 4:13
Come now, those saying, Today or tomorrow we will go into such a city and spend a year there, and we will trade and will make a profit,

Thou

1 Samuel 28:19
And, Jehovah will also deliver Israel with you into the hand of the Philistines. And tomorrow you and your sons shall be with me. Jehovah also shall deliver the army of Israel into the hand of the Philistines.

General references

Leviticus 8:32
And that which remains of the flesh and of the bread you shall burn with fire.
Proverbs 3:28
Do not say to your neighbor, Go and come back again, and tomorrow I will give; when you have it beside you:
James 4:16
But now you boast in your presumptions. All such boasting is evil.