Abraham : The father of many nations, as to the Inheritance of Canaan

Gen 15:8 And he said, Lord GOD, whereby shall I know that I shall inherit it?
Gen 16:2 Sarai said to Abram, "Look, the Lord has not allowed me to have children. So have sexual relations with my slave girl. If she has a child, maybe I can have my own family through her." Abram did what Sarai said.

Sarah: she will be the mother of nations; kings of peoples will come from her."

Gen 18:12 So Sarah laughed to herself as she thought, "After I am worn out and my master is old, will I now have this pleasure?"

Gideon, as to Victory over Midian

Jdg 6:17 And he said unto him, If now I have found grace in thy sight, then shew me a sign that thou talkest with me.

Zechariah : he was serving as priest before God,

Luke 1:18 – 20, Zechariah asked the angel, "How can I be sure of this? I am an old man and my wife is well along in years…. now you will be silent and not able to speak until the day this happens, because you did not believe my words."

John the Baptist : as to the Messiahship of Jesus

Mat 11:3 And said unto him, Art thou he that should come, or do we look for another?

Martha : as to the Resurrection of Lazarus

John 11:39 Jesus said, Take ye away the stone. Martha, the sister of him that was dead, saith unto him, Lord, by this time he stinketh: for he hath been dead four days.

The Disciples of Jesus : after the resurrection of Jesus.

Mat 28:17 And when they saw him, they worshipped him: but some doubted.

Thomas : as to the Resurrection of Christ

John 20:25 The other disciples therefore said unto him, We have seen the Lord. But he said unto them, Except I shall see in his hands the print of the nails, and put my finger into the print of the nails, and thrust my hand into his side, I will not believe.

Early Christians : as to the Deliverance of Peter

Acts 12:14 And when she knew Peter's voice, she opened not the gate for gladness, but ran in, and told how Peter stood before the gate. Acts 12:15 And they said unto her, Thou art mad. But she constantly affirmed that it was even so. Then said they, It is his angel.