The Greek verb enkryptō means to hide something within something else — to conceal by placing inside. It is a compound of en (in) and kryptō (to hide). In the New Testament it appears in Jesus' parable of the leaven.
In Matthew 13:33 and Luke 13:21, the kingdom of heaven is like leaven that a woman hides (enkryptō) in three measures of flour until all is leavened. The deliberate concealment of the leaven — small, invisible, yet pervasively transformative — describes how the kingdom works. God hides His redemptive purposes within ordinary reality, and they transform from the inside out, beyond human detection, until the whole is changed.