To deny means to disown, reject, refuse, withhold, or speak against. The intensity may range from contradicting a statement to completely disowning a person or truth. In Christian discipleship it may also mean renouncing oneself.
The New Testament uses deny of rejecting the resurrection, disowning Christ, and denying Him before others. Christ’s call to deny oneself and take up the cross has the sterner sense of renouncing oneself in order to follow Him.
Old Testament translations use several Hebrew terms meaning to lie or disown, withhold, or turn back and say no. The principal New Testament verb means to disown, while its prefixed form can express complete disowning.