Hebrews 2:1

So [then], we [Christians] should pay closer attention to the things we have heard, so that we do not drift away from [believing and practicing] them.

Matthew 16:9

Do you not understand yet or remember that five thousand people [were fed] with five loaves of bread and how many baskets [of pieces] were picked up [afterward]?

Mark 8:18

Even though you have eyes, do you not see? And even though you have ears, do you not hear? And do you not remember?

Luke 8:15

And those people [represented by seed falling] in the fertile soil are those who possess a good and honest heart when they hear the word [of God]. They hold on to it and patiently [continue until they] produce a crop.

Luke 9:44

"Pay close attention to what I am saying, for the Son of man will be handed over to [evil] men."

Hebrews 1:1-2

In times past God spoke to our forefathers through the prophets in many parts and in various ways,

Hebrews 2:2-4

For if the message spoken through angels proved to be binding [Note: This is a reference to the law of Moses. See Acts 7:53; Gal. 3:19], and every violation [of it] and disobedience [to it] received a just penalty,

Hebrews 12:5

And have you forgotten the exhortation that was addressed to you as sons? [Prov. 3:11f says], "My son, do not take the discipline of the Lord lightly, and do not get discouraged when He rebukes you.

Hebrews 12:25-26

Pay careful attention so that you do not refuse [to hear] God when He speaks to you. [See verse 9]. For if those people [i.e., the Israelites] did not escape [judgment] when they refused [to hear] Him who warned them on earth [i.e., God speaking through Moses at Mount Sinai], how much less [likely] will we escape [judgment] if we reject Him who warns from heaven [i.e., Christ]?

2 Peter 1:12-13

Therefore, I intend to constantly remind you people about these things [i.e., those mentioned in verses 5-11], even though you [already] know them, and have been established in the truth you now possess.

2 Peter 1:15

And I will make every effort to see that, after I leave [i.e., die], you will always be able to recall the things [I said to you].

2 Peter 3:1

This is now, my dearly loved ones, the second letter I am writing to you; in both of them, as a reminder, I want to stir up your sincere thoughts

Treasury of Scripture Knowledge

Summary

Therefore we ought to give the more earnest heed to the things which we have heard, lest at any time we should let them slip.

The more

Bible References

Therefore

Hebrews 2:2
For if the message spoken through angels proved to be binding [Note: This is a reference to the law of Moses. See Acts 7:53; Gal. 3:19], and every violation [of it] and disobedience [to it] received a just penalty,
Hebrews 1:1
In times past God spoke to our forefathers through the prophets in many parts and in various ways,
Hebrews 12:25
Pay careful attention so that you do not refuse [to hear] God when He speaks to you. [See verse 9]. For if those people [i.e., the Israelites] did not escape [judgment] when they refused [to hear] Him who warned them on earth [i.e., God speaking through Moses at Mount Sinai], how much less [likely] will we escape [judgment] if we reject Him who warns from heaven [i.e., Christ]?

The more

Luke 8:15
And those people [represented by seed falling] in the fertile soil are those who possess a good and honest heart when they hear the word [of God]. They hold on to it and patiently [continue until they] produce a crop.
Luke 9:44
"Pay close attention to what I am saying, for the Son of man will be handed over to [evil] men."

We should

Hebrews 12:5
And have you forgotten the exhortation that was addressed to you as sons? [Prov. 3:11f says], "My son, do not take the discipline of the Lord lightly, and do not get discouraged when He rebukes you.
Matthew 16:9
Do you not understand yet or remember that five thousand people [were fed] with five loaves of bread and how many baskets [of pieces] were picked up [afterward]?
Mark 8:18
Even though you have eyes, do you not see? And even though you have ears, do you not hear? And do you not remember?
2 Peter 1:12
Therefore, I intend to constantly remind you people about these things [i.e., those mentioned in verses 5-11], even though you [already] know them, and have been established in the truth you now possess.
2 Peter 3:1
This is now, my dearly loved ones, the second letter I am writing to you; in both of them, as a reminder, I want to stir up your sincere thoughts