Romans 12:15
Be happy with those who are joyful. Cry with those who are sad.
Hebrews 13:3
Remember [to pray for and help] those who are in prison, as though you [yourselves] were in prison with them. [Remember] those who are being mistreated, realizing that you [yourselves] also share [with them] a physical body [i.e., you are subject to the same kind of trials].
1 Corinthians 12:26
So, if one part [i.e., one Christian] suffers, then all the parts [i.e., the other Christians] should suffer with it. Or, if one part is honored, all the [other] parts should rejoice with it.
Luke 1:58
When her neighbors and relatives heard that the Lord had extended great mercy toward her [i.e., in giving her a child], they rejoiced with her.
Luke 15:5-10
And when he finds it, he places it on his shoulders [i.e., to return it], and is so glad.
John 11:19
and many of Martha and Mary's Jewish friends had come to comfort them over [the loss of] their brother.
John 11:33-36
When Jesus saw her and her Jewish friends, who had come with her, crying, He felt distressed in His spirit and [visibly] troubled [Note: This last word means to shake with emotion, and seems to have been caused by His deep sympathy for these grieving people],
Acts 11:23
When he got there and saw how God was favoring the people [with salvation] he was very happy and [stayed on and] encouraged everyone to remain close to the Lord with a heartfelt purpose.
2 Corinthians 2:3
And I wrote you this very thing so that when I did come I might not be grieved by those who should make me happy. I had confidence in all of you, that whatever makes me happy [also] makes you happy.
2 Corinthians 11:29
Who is weak, and I do not feel their weakness? Who is led astray [from God], and I do not burn [i.e., with righteous anger over the one who caused it]?
Philippians 2:17-18
But even if I am poured out like a drink offering [See Ex. 29:38-41] on the sacrifice and service produced by your faith, I am glad and will rejoice with all of you. [Note: Paul here likens the possible pouring out of his blood to the wine and oil of the Old Testament sacrifice, which is then likened to the Philippians' faithful service to God].
Philippians 2:26
For he longed to see all of you and was very distressed because you had heard that he was sick.
Philippians 2:28
So, I am all the more eager to send him to you people, so that when you see him again you will be glad, and that my sorrow will be lessened [i.e., in knowing that you are relieved to see that he is well again].