'Unless' in the Bible

For I tell you, unless your righteousness surpasses that of the scribes and Pharisees, you will never enter the kingdom of heaven.

How can someone enter a strong man’s house and steal his possessions unless he first ties up the strong man? Then he can rob his house.

“I assure you,” He said, “unless you are converted and become like children, you will never enter the kingdom of heaven.

Unless those days were limited, no one would survive. But those days will be limited because of the elect.

Again, a second time, He went away and prayed, “My Father, if this cannot pass unless I drink it, Your will be done.”