'That's' in the Bible

Rejoice and be extremely glad, because your reward in heaven is great! That's how they persecuted the prophets who came before you."

And if you greet only your relatives, that's no great thing you're doing, is it? Even the unbelievers do the same, don't they?

"That's why I'm telling you to stop worrying about your life what you will eat or what you will drink or about your body what you will wear. Life is more than food, isn't it, and the body more than clothing?

If that’s how God clothes the grass of the field, which is here today and thrown into the furnace tomorrow, won’t He do much more for you—you of little faith?

Then off it goes and brings with it seven other spirits more evil than itself, and they enter and settle down there. As a result, that man’s last condition is worse than the first. That’s how it will also be with this evil generation.”

That's why I speak to them in parables, because "they look but don't see, and they listen but don't hear or understand.'

“This is John the Baptist!” he told his servants. “He has been raised from the dead, and that’s why supernatural powers are at work in him.”

That's not the way it should be among you. Instead, whoever wants to be great among you must be your servant,

That's the way it is with the Son of Man. He did not come to be served, but to serve and to give his life as a ransom for many people."

They were unaware of what was happening until the flood came and swept all of them away. That's how it will be when the Son of Man comes.