Luke 12:19-20

And I will say to my soul, Soul, thou hast much goods laid up for many years: take thine ease; eat, drink, and be merry.

James 4:13-16

Go to now, ye that say, To day or to morrow we will go to such a city, and continue there a year, and traffick, and get gain:

2 Corinthians 6:2

(For he saith, I have heard thee in an acceptable time, and in a day of salvation have I succoured thee. Behold, now is the acceptable 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.

General references

Bible References

Boast

Luke 12:19
And I will say to my soul, Soul, thou hast much goods laid up for many years: take thine ease; eat, drink, and be merry.
2 Corinthians 6:2
(For he saith, I have heard thee in an acceptable time, and in a day of salvation have I succoured thee. Behold, now is the acceptable time; behold, now is the day of salvation.)
James 4:13
Go to now, ye that say, To day or to morrow we will go to such a city, and continue there a year, and traffick, and get gain:

General references

James 4:16
But now ye glory in your boastings: all such glorying is evil.