Scripture indicates various ways in which believers may fail God, while emphasising that God will never fail his people.
God will never fail his people
See also
God's righteousness will not fail
God's compassion will not fail
God's word will not fail
Examples of failing God
Failing to abide in him
Failing to believe in him
Failing to fear him
Failing to honour him
Failing to love him
Failing to obey him
Failing to remember him
Failing to seek him
Failing to serve him
Failing to trust him
pp Lk 12:28
Peter's failure of Jesus Christ
pp Mk 14:29-31