Hebrews 3:13

3:13 But exhort one another each day, as long as it is called “Today,” that none of you may become hardened by sin’s deception.

Hebrews 10:25

10:25 not abandoning our own meetings, as some are in the habit of doing, but encouraging each other, and even more so because you see the day ¹  drawing near. ² 

Hebrews 12:11

12:11 Now all discipline seems painful at the time, not joyful. ³  But later it produces the fruit of peace and righteousness ⁴  for those trained by it.

Hebrews 12:26

12:26 Then his voice shook the earth, but now he has promised, “I will once more shake not only the earth but heaven too.” ⁵ 

[10:25]  ¹ sn The day refers to that well-known time of Christ’s coming and judgment in the future; see a similar use of “day” in 1 Cor 3:13.

[10:25]  ² tn This paragraph (vv. 19-25) is actually a single, skillfully composed sentence in Greek, but it must be broken into shorter segments for English idiom. It begins with several subordinate phrases (since we have confidence and a great priest), has three parallel exhortations as its main verbs (let us draw near, hold, and take thought), and concludes with several subordinate phrases related to the final exhortation (not abandoning but encouraging).

[12:11]  ¹ tn Grk “all discipline at the time does not seem to be of joy, but of sorrow.”

[12:11]  ² tn Grk “the peaceful fruit of righteousness.”

[12:26]  ¹ sn A quotation from Hag 2:6.