Verses with the word straitly in the New Testament (7 verses):

Matthew 9:30
And their eyes were opened; and Jesus straitly charged them, saying, See that no man know it.

Mark 1:43
And he straitly charged him, and forthwith sent him away;

Mark 3:12
And he straitly charged them that they should not make him known.

Mark 5:43
And he charged them straitly that no man should know it; and commanded that something should be given her to eat.

Luke 9:21
And he straitly charged them, and commanded them to tell no man that thing;

Acts 4:17
But that it spread no further among the people, let us straitly threaten them, that they speak henceforth to no man in this name.

Acts 5:28
Saying, Did not we straitly command you that ye should not teach in this name? and, behold, ye have filled Jerusalem with your doctrine, and intend to bring this man's blood upon us.