'Examining' in the Bible

For God has unveiled them and revealed them to us through the [Holy] Spirit; for the Spirit searches all things [diligently], even [sounding and measuring] the [profound] depths of God [the divine counsels and things far beyond human understanding].

If one of the unbelievers invites you [to a meal at his home] and you want to go, eat whatever is served to you without asking questions [about its source] for the sake of your conscience.