Psalms 107:39

MKJV⁽ⁱ⁾ ³⁹ Again, they have become few, and humbled through harshness, affliction, and sorrow.

Online Parallel Study Bible

Again.The incidents detailed in these verses, which frequently occur, and mark the superintendence of a benign Providence, and the hand of a just God, appear to be brought forward to illustrate the return of the Israelites from captivity, and the punishment of their oppressors the Babylonians. Wherefore, at last, as in a common chorus, they conclude with exhorting each other to a serious consideration of these things, and to make a proper return to the Almighty.
they are.
Psalms 30:6; Psalms 30:7; Genesis 45:11; Ruth 1:20; Ruth 1:21; 1 Samuel 2:5-7; 2 Kings 4:8; 2 Kings 8:3; Job 1:10-17
oppression.
Exodus 1:13; Exodus 1:14; Exodus 2:23; Exodus 2:24; Judges 6:3-6; 2 Kings 10:32; 2 Kings 13:7; 2 Kings 13:22; 2 Kings 14:26
2 Chronicles 15:5; 2 Chronicles 15:6; Jeremiah 51:33; Jeremiah 51:34