2 Kings 20:8-11
Now Hezekiah had asked Isaiah, “What will be the sign that the LORD will heal me and that I will go up to the house of the LORD on the third day?” / And Isaiah had replied, “This will be a sign to you from the LORD that He will do what He has promised: Would you like the shadow to go forward ten steps, or back ten steps?” / “It is easy for the shadow to lengthen ten steps,” answered Hezekiah, “but not for it to go back ten steps.” ...

Isaiah 7:11-14
“Ask for a sign from the LORD your God, whether from the depths of Sheol or the heights of heaven.” / But Ahaz replied, “I will not ask; I will not test the LORD.” / Then Isaiah said, “Hear now, O house of David! Is it not enough to try the patience of men? Will you try the patience of my God as well? ...

Genesis 9:12-17
And God said, “This is the sign of the covenant I am making between Me and you and every living creature with you, a covenant for all generations to come: / I have set My rainbow in the clouds, and it will be a sign of the covenant between Me and the earth. / Whenever I form clouds over the earth and the rainbow appears in the clouds, ...

Exodus 4:1-9
Then Moses answered, “What if they do not believe me or listen to my voice? For they may say, ‘The LORD has not appeared to you.’” / And the LORD asked him, “What is that in your hand?” “A staff,” he replied. / “Throw it on the ground,” said the LORD. So Moses threw it on the ground, and it became a snake, and he ran from it. ...

Judges 6:36-40
Then Gideon said to God, “If You are going to save Israel by my hand, as You have said, / then behold, I will place a fleece of wool on the threshing floor. If there is dew only on the fleece and all the ground is dry, then I will know that You are going to save Israel by my hand, as You have said.” / And that is what happened. When Gideon arose the next morning, he squeezed the fleece and wrung out the dew—a bowlful of water. ...

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.

1 Kings 13:3-5
That day the man of God gave a sign, saying, “The LORD has spoken this sign: ‘Surely the altar will be split apart, and the ashes upon it will be poured out.’” / Now when King Jeroboam, who was at the altar in Bethel, heard the word that the man of God had cried out against it, he stretched out his hand and said, “Seize him!” But the hand he stretched out toward him withered, so that he could not pull it back. / And the altar was split apart, and the ashes poured out, according to the sign that the man of God had given by the word of the LORD.

2 Kings 19:29-31
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. / And the surviving remnant of the house of Judah will again take root below and bear fruit above. / For a remnant will go forth from Jerusalem, and survivors from Mount Zion. The zeal of the LORD of Hosts will accomplish this.

Jeremiah 44:29-30
This will be a sign to you that I will punish you in this place, declares the LORD, so that you may know that My threats of harm against you will surely stand. / This is what the LORD says: Behold, I will deliver Pharaoh Hophra king of Egypt into the hands of his enemies who seek his life, just as I delivered Zedekiah king of Judah into the hand of Nebuchadnezzar king of Babylon, the enemy who was seeking his life.”

Matthew 12:38-40
Then some of the scribes and Pharisees said to Him, “Teacher, we want to see a sign from You.” / Jesus replied, “A wicked and adulterous generation demands a sign, but none will be given it except the sign of the prophet Jonah. / For as Jonah was three days and three nights in the belly of the great fish, so the Son of Man will be three days and three nights in the heart of the earth.

Luke 11:29-30
As the crowds were increasing, Jesus said, “This is a wicked generation. It demands a sign, but none will be given it except the sign of Jonah. / For as Jonah was a sign to the Ninevites, so the Son of Man will be a sign to this generation.

John 2:18-22
On account of this, the Jews demanded, “What sign can You show us to prove Your authority to do these things?” / Jesus answered, “Destroy this temple, and in three days I will raise it up again.” / “This temple took forty-six years to build,” the Jews replied, “and You are going to raise it up in three days?” ...

John 4:48
Jesus said to him, “Unless you people see signs and wonders, you will never believe.”

Acts 2:22
Men of Israel, listen to this message: Jesus of Nazareth was a man certified by God to you by miracles, wonders, and signs, which God did among you through Him, as you yourselves know.

Romans 15:19
by the power of signs and wonders, and by the power of the Spirit of God. So from Jerusalem all the way around to Illyricum, I have fully proclaimed the gospel of Christ.