NET
16 I have prayed for deliverance, because otherwise they will gloat over me; when my foot slips they will arrogantly taunt me.
Darby
16 For I said, Let them not rejoice over me! When my foot slipped, they magnified [themselves] against me.
KJV
16 For I said, [Hear me], lest [otherwise] they should rejoice over me: when my foot slippeth, they magnify [themselves] against me.