'Used' in the Bible

And his sons used to go and hold a feast {at each other's house} on his day, and they would send, and they would invite their three sisters to eat and to drink with them.

{Then when} the days of the feast had run their course, {Job would send}, and he would sanctify them. Thus he would arise early in the morning and offer burnt offerings [according to] the number of all of them, because Job thought, "Perhaps my children have sinned and {cursed} God in their heart." This is what Job used to do {all the time}.

So my lyre came to be [used] for mourning, and my flute [for the] voice of [those who] weep.