Where are guardian angels mentioned in the Bible?

Where in the Bible can I substantiate that we have a Guardian Angel to non-Catholics?
Thank you.

Although this is not an exhaustive list, here are some Scripture passages commonly cited in support of the existence of guardian angels. These quotes are from the Revised Standard Version.

See that you do not despise one of these little ones; for I tell you that in heaven their angels always behold the face of my Father who is in heaven. (Matthew 18:10)

The poor man died and was carried by the angels to Abraham’s bosom. (Luke 16:22)

The angel of the Lord encamps around those who fear him, and delivers them. (Psalm 34:7)

For he will give his angels charge of you to guard you in all your ways. (Psalm 91:11)

If there be for him an angel, a mediator, one of the thousand, to declare to man what is right for him… (Job 33:23)

Are they not all ministering spirits sent forth to serve, for the sake of those who are to obtain salvation? (Hebrew 1:14)

The very night when Herod was about to bring him out, Peter was sleeping between two soldiers, bound with two chains, and sentries before the door were guarding the prison; and behold, an angel of the Lord appeared, and a light shone in the cell; and he struck Peter on the side and woke him, saying, “Get up quickly.” And the chains fell off his hands. And the angel said to him, “Dress yourself and put on your sandals.” And he did so. And he said to him, “Wrap your mantle around you and follow me.” And he went out and followed him; he did not know that what was done by the angel was real, but thought he was seeing a vision. When they had passed the first and the second guard, they came to the iron gate leading into the city. It opened to them of its own accord, and they went out and passed on through one street; and immediately the angel left him. And Peter came to himself, and said, “Now I am sure that the Lord has sent his angel and rescued me from the hand of Herod and from all that the Jewish people were expecting.” When he realized this, he went to the house of Mary, the mother of John whose other name was Mark, where many were gathered together and were praying. And when he knocked at the door of the gateway, a maid named Rhoda came to answer. Recognizing Peter’s voice, in her joy she did not open the gate but ran in and told that Peter was standing at the gate. They said to her, “You are mad.” But she insisted that it was so. They said, “It is his angel!” But Peter continued knocking; and when they opened, they saw him and were amazed. But motioning to them with his hand to be silent, he described to them how the Lord had brought him out of the prison. (Acts 12:6-17)

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