'Unto' in the Bible

Verily I say unto you, that all sins shall be forgiven to the sons of men, and all the injurious speeches with which they may speak injuriously;

And groaning in his spirit, he says, Why does this generation seek a sign? Verily I say unto you, A sign shall in no wise be given to this generation.

And Jesus went forth and his disciples, into the villages of Caesarea-Philippi. And by the way he asked his disciples, saying unto them, Who do men say that I am?

And he said to them, Verily I say unto you, There are some of those standing here that shall not taste death until they shall have seen the kingdom of God come in power.

but I say unto you that Elias also is come, and they have done to him whatever they would, as it is written of him.

For whosoever shall give you a cup of water to drink in my name, because ye are Christ's, verily I say unto you, he shall in no wise lose his reward.

Should we give, or should we not give? But he knowing their hypocrisy said unto them, Why tempt ye me? Bring me a denarius that I may see it.

And having called his disciples to him he said to them, Verily I say unto you, This poor widow has cast in more than all who have cast into the treasury:

Verily I say unto you, This generation shall in no wise pass away, till all these things take place.

And verily I say unto you, Wheresoever these glad tidings may be preached in the whole world, what this woman has done shall be also spoken of for a memorial of her.

And he says to them, My soul is full of grief even unto death; abide here and watch.