2 In those days I, Daniel was mourning three full weeks.
Daniel 10:2 Cross References - CAB
Ezra 9:4-5
4 Then there assembled to me all that followed the word of the God of Israel, on account of the transgression of the captivity; and I remained mourning until the evening sacrifice.
5 And at the evening sacrifice I rose up from my humiliation; and when I had tore my clothes, then I trembled, and I bowed myself on my knees, and spread out my hands to the Lord God,
Nehemiah 1:4
4 And it came to pass, when I heard these words, that I sat down and wept, and mourned for several days, and continued fasting and praying before the God of heaven.
Psalms 42:9
9 I will say to God, You are my helper; why have You forgotten me? Why do I mourn, while the enemy oppresses me?
Psalms 43:2
2 for You are my strength; why have You cast me off? And why do I go mourning, while the enemy oppresses me?
Psalms 137:1-5
1 For David, A Psalm of Jeremiah. By the rivers of Babylon, there we sat; and wept when we remembered Zion.
2 We hung our harps on the willows in the midst of it.
3 For there they that had taken us captive asked of us the words of a song; and they that had carried us away asked a hymn, saying, Sing us one of the songs of Zion.
4 How should we sing the Lord's song in a strange land?
5 If I forget you, O Jerusalem, let my right hand forget its skill.
Isaiah 66:10
10 Rejoice, O Jerusalem, and all you that love her hold in her a general assembly; rejoice greatly with her, all that now mourn over her;
Jeremiah 9:1
1 Who will give water to my head, and a fountain of tears to my eyes? Then would I weep for this my people day and night, even for the slain of the daughter of my people.
Daniel 9:24-27
24 Seventy weeks have been determined upon your people, and upon the holy city, for sin to be ended, to seal up transgressions, to blot out iniquities, to make atonement for iniquities, to bring in everlasting righteousness, to seal up vision and prophecy, and to anoint the Most Holy.
25 And you shall know and understand, that from the going forth of the command for the answer and for the building of Jerusalem, until Christ the Prince, there shall be seven weeks, and sixty-two weeks; and then the time shall return, and the street shall be built, and the wall, and the times shall be exhausted.
26 And after the sixty-two weeks, the Anointed One shall be killed, and there is no judgment in Him. And He shall destroy the city and the sanctuary with the prince that is to come: they shall be cut off with a flood, and to the end of the war which is rapidly completed He shall appoint the city to desolations.
27 And one week shall establish the covenant with many. And in the midst of the week my sacrifice and drink offering shall be taken away: and on the temple shall be the abomination of desolations; and at the end of the time an end shall be put to the desolation.
Matthew 9:15
15 And Jesus said to them, "Can the groomsmen mourn as long as the bridegroom is with them? But the days will come when the bridegroom will be taken away from them, and then they will fast.
Romans 9:2
2 that I have great sorrow and unceasing pain in my heart.
James 4:9
9 Lament and mourn and weep! Let your laughter change into mourning and your joy into dejection.
Revelation 11:5
5 And if anyone wants to harm them, fire proceeds from their mouth and devours their enemies. And if anyone wants to harm them, he must be killed in this way.