Luke 12:19-20

And I will say to myself, 'Soul, you have plenty of goods [i.e., grain and supplies] stored up for many years, [so], take it easy; eat, drink and have fun.'

James 4:13-16

Come on now, you people who are saying, "Today or tomorrow we will go to this [or that] city, spend a year there, do business and make some money."

2 Corinthians 6:2

for God said [Isa. 49:8], "I listened to you at the right time [i.e., when you needed my favor], and I helped you on the day of your salvation." Look, now is the right time [to accept God's favor]; 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 myself, 'Soul, you have plenty of goods [i.e., grain and supplies] stored up for many years, [so], take it easy; eat, drink and have fun.'
2 Corinthians 6:2
for God said [Isa. 49:8], "I listened to you at the right time [i.e., when you needed my favor], and I helped you on the day of your salvation." Look, now is the right time [to accept God's favor]; now is the day of salvation.
James 4:13
Come on now, you people who are saying, "Today or tomorrow we will go to this [or that] city, spend a year there, do business and make some money."

General references

James 4:16
But, as it is, you people are boasting in your arrogance [and] all such boasting is evil.