'Sure' in the Bible

Command therefore that the sepulchre be made sure until the third day, lest haply his disciples come and steal him away, and say unto the people, He is risen from the dead: and the last error will be worse than the first.

Pilate said unto them, Ye have a guard: go, make it as'sure as ye can.

So they went, and made the sepulchre sure, sealing the stone, the guard being with them.