'Single' in the Bible

Neither should you swear by your head, because you cannot make a single hair white or black.

The light of the body is the eye: if therefore thine eye be single, thy whole body shall be full of light.

Can any of you add a single cubit to his height by worrying?

"Which of you is there," He replied, "who, if he has but a single sheep and it falls into a hole on the Sabbath, will not lay hold of it and lift it out?

and upon finding a single pearl of great value, he went and sold all that he had and bought it.

Seeing a lone fig tree at the roadside, He went to it and found nothing but leaves on it; and He said to it, “Never again will fruit come from you.” And at once the fig tree withered.

"How terrible it will be for you, scribes and Pharisees, you hypocrites! You travel over land and sea to make a single convert, and when this happens you make him twice as fit for hell as you are.

But he told them, "You see all these things, don't you? I tell all of you with certainty, there isn't a single stone here that will be left standing on top of another. They will all be torn down."

Jesus said to him, “I assure you and most solemnly say to you, this night, before a rooster crows, you will [completely] deny Me three times.”

Then He came to the disciples and found them asleep, and He said to Peter, "Alas, none of you could keep awake with me for even a single hour!

And Peter remembered the [prophetic] words of Jesus, when He had said, “Before a rooster crows, you will deny Me three times.” And he went outside and wept bitterly [in repentance].

And He did not answer him with regard to even a single charge, so the governor was quite amazed.