'Safely' in the Bible

Saying, The doors of the prison were safely shut, and the keepers were at the doors, but when they were open, there was nobody inside.

And when they had given them a great number of blows, they put them in prison, giving orders to the keeper of the prison to keep them safely:

And get beasts so that they may put Paul on them, and take him safely to Felix, the ruler.

And when the people saw it hanging on his hand, they said to one another, Without doubt this man has put someone to death, and though he has got safely away from the sea, God will not let him go on living.