'Certain' in the Bible

The sinner gets the payment of deceit; but his reward is certain who puts in the seed of righteousness.

True lips are certain for ever, but a false tongue is only for a minute.

Where there are no wise suggestions, purposes come to nothing; but by a number of wise guides they are made certain.

Put your works into the hands of the Lord, and your purposes will be made certain.

To make you see how certain are true words, so that you may give a true answer to those who put questions to you?

Do not make a noise about tomorrow, for you are not certain what a day's outcome may be.