Verses with the word tribulation in the Old Testament (3 verses):

Deuteronomy 4:30
When thou art in tribulation, and all these things are come upon thee, even in the latter days, if thou turn to the LORD thy God, and shalt be obedient unto his voice;

Judges 10:14
Go and cry unto the gods which ye have chosen; let them deliver you in the time of your tribulation.

1 Samuel 26:24
And, behold, as thy life was much set by this day in mine eyes, so let my life be much set by in the eyes of the LORD, and let him deliver me out of all tribulation.