2 Samuel 3:35

Then all the people came to give David food. Still on that day, David swore, "{May God punish me} if I taste food or anything before the sun goes down."

2 Samuel 1:12

Then they mourned and wept and fasted over Saul and Jonathan his son until the evening, [as well] as over the people of Yahweh and over the house of Israel because they had fallen by the sword.

2 Samuel 12:17

The elders of his household stood over him to lift him up from the ground, but he [was] not willing, and he did not eat [any] food with them.

Ruth 1:17

Where you die I will die, and there I will be buried. So may Yahweh do to me, {and even more, unless} death {separates you and me}!"

Jeremiah 16:7

And they will not break bread for [the] mourning ceremony for them, to comfort him because of [the] dead. And they will not give drink to them, [the] cup of desolation, for their fathers, or for their mothers.

Judges 20:26

And all the {Israelites} and all the troops went up and came to Bethel and wept; and they sat there before Yahweh and fasted on that day until evening; and they offered burnt offerings and fellowship offerings before Yahweh.

1 Samuel 3:17

And he said, "What [is] the message that he spoke to you? Please do not conceal [it] from me. May God {punish you severely} if you conceal anything from me of all the words that he told you."

2 Samuel 3:9

Thus {may God punish Abner}, {if I do not accomplish what Yahweh has sworn to David};

Ezekiel 24:17

Sigh in silence [for the] dead; you shall not make a mourning ceremony. Bind your turban on you, and you must put your sandals on your feet. You must not cover your [upper] lip, and the bread of {mourners} you shall not eat."

Ezekiel 24:22

and you shall do {just as} I did: You shall not cover your [upper] lip, and you shall not eat [the] bread of {mourners}.

Treasury of Scripture Knowledge

Summary

And when all the people came to cause David to eat meat while it was yet day, David sware, saying, So do God to me, and more also, if I taste bread, or ought else, till the sun be down.

Bible References

Cause

2 Samuel 12:17
The elders of his household stood over him to lift him up from the ground, but he [was] not willing, and he did not eat [any] food with them.
Jeremiah 16:7
And they will not break bread for [the] mourning ceremony for them, to comfort him because of [the] dead. And they will not give drink to them, [the] cup of desolation, for their fathers, or for their mothers.
Ezekiel 24:17
Sigh in silence [for the] dead; you shall not make a mourning ceremony. Bind your turban on you, and you must put your sandals on your feet. You must not cover your [upper] lip, and the bread of {mourners} you shall not eat."

So do

2 Samuel 3:9
Thus {may God punish Abner}, {if I do not accomplish what Yahweh has sworn to David};
Ruth 1:17
Where you die I will die, and there I will be buried. So may Yahweh do to me, {and even more, unless} death {separates you and me}!"

Till the

2 Samuel 1:12
Then they mourned and wept and fasted over Saul and Jonathan his son until the evening, [as well] as over the people of Yahweh and over the house of Israel because they had fallen by the sword.
Judges 20:26
And all the {Israelites} and all the troops went up and came to Bethel and wept; and they sat there before Yahweh and fasted on that day until evening; and they offered burnt offerings and fellowship offerings before Yahweh.