a sign.

2 Kings 19:21, 31-34
This is the word the LORD has spoken against him: 'The virgin Daughter of Zion despises you and mocks you; the Daughter of Jerusalem shakes her head behind you. . . .

2 Kings 20:8, 9
Now Hezekiah had asked Isaiah, "What is the sign that the LORD will heal me and that I will go up to the house of the LORD on the third day?" . . .

Exodus 3:12
"I will surely be with you, " God said, "and this will be the sign to you that I have sent you: When you have brought the people out of Egypt, all of you will worship God on this mountain."

1 Samuel 2:34
And this sign shall come to you concerning your two sons Hophni and Phinehas: They will both die on the same day.

Isaiah 7:11-14
"Ask for a sign from the LORD your God, whether from the depths of Sheol or the heights of heaven." . . .

Luke 2:12
And this will be a sign to you: You will find a baby wrapped in swaddling cloths and lying in a manger."

Ye shall eat.

Leviticus 25:4, 5, 20-22
But in the seventh year there shall be a Sabbath of complete rest for the land--a Sabbath to the LORD. You are not to sow your field or prune your vineyard. . . .

Isaiah 37:30
And this will be a sign to you, O Hezekiah: This year you will eat what grows on its own, and in the second year what springs from the same. But in the third year you will sow and reap; you will plant vineyards and eat their fruit.