'Exercise' in the Bible

in order that as sin has exercised kingly sway in inflicting death, so grace, too, may exercise kingly sway in bestowing a righteousness which results in the Life of the Ages through Jesus Christ our Lord.

Since we have gifts that differ according to the grace given to us, each of us is to exercise them accordingly: if prophecy, according to the proportion of his faith;

if it is the gift of administration, let the administrator exercise a sound judgement in his duties.

The faith which you have [that gives you freedom of choice], have as your own conviction before God [just keep it between yourself and God, seeking His will]. Happy is he who has no reason to condemn himself for what he approves.