Proverbs 27:1

Do not boast thyself of to-morrow, for thou knowest not what a day may bring forth.

Luke 12:19-20

and will say to my soul - Soul! thou hast many good things lying by for many years: be taking thy rest, eat, drink,be making merry!

James 4:13-16

Come now! ye that say - Today or To-morrow, we will journey unto this city here, and will spend there a year, and will trade and get gain, -

1 Samuel 28:19

that Yahweh may deliver, Israel also, with thee, into the hand of the Philistines, and, to-morrow, thou and thy sons with thee are about to fall, - the host of Israel also, will Yahweh deliver, into the hand of the Philistines.

Psalm 95:7

For, he, is our God, And, we, are the people of his pasture, and the flock of his hand? To-day, if, to his voice, ye will hearken,

Isaiah 56:12

Come ye! I will fetch wine Let us fill ourselves with strong drink, - And like this day, shall, to-morrow be - Great beyond measure!

2 Corinthians 6:2

For he saith - In an approved season, have I hearkened unto thee, and, in a day of salvation, have succoured thee; - Lo! now, a well-approved season, Lo! now, a 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 flock of his hand? To-day, if, to his voice, ye will hearken,
Isaiah 56:12
Come ye! I will fetch wine Let us fill ourselves with strong drink, - And like this day, shall, to-morrow be - Great beyond measure!
Luke 12:19
and will say to my soul - Soul! thou hast many good things lying by for many years: be taking thy rest, eat, drink,be making merry!
2 Corinthians 6:2
For he saith - In an approved season, have I hearkened unto thee, and, in a day of salvation, have succoured thee; - Lo! now, a well-approved season, Lo! now, a day of salvation:
James 4:13
Come now! ye that say - Today or To-morrow, we will journey unto this city here, and will spend there a year, and will trade and get gain, -

Thou

1 Samuel 28:19
that Yahweh may deliver, Israel also, with thee, into the hand of the Philistines, and, to-morrow, thou and thy sons with thee are about to fall, - the host of Israel also, will Yahweh deliver, into the hand of the Philistines.

General references

Leviticus 8:32
But, that which is left of the flesh, and of the bread, with fire, shall ye consume.
Proverbs 3:28
Do not say to thy neighbour, Go and come again, and to-morrow I will give, when thou hast it by thee.
James 4:16
Whereas, now, are ye boasting in your pretensions: - All boasting like this, is, wicked,