'Secretly' in the Bible

What I say to you in the dark, say in the light: and what comes to your ear secretly, say publicly from the house-tops.

Give orders, then, that the place where his body is may be made safe till the third day, for fear that his disciples come and take him away secretly and say to the people, He has come back from the dead: and the last error will be worse than the first.

Say, His disciples came by night and took him away secretly while we were sleeping.