1 John 4:18

There is no fear in love (dread does not exist). But perfect (complete, full-grown) love drives out fear, because fear involves (the expectation of divine) punishment, so the one who is afraid (of God’s judgement) is not perfected in love (has not grown into sufficient understand of God’s love).

As believers, when we make a mistake and sin, the expectation of punishment will manifest in our hearts and minds. Immediately confess that sin to God and return to the Love walk. Fear comes from letting the devil get a foothold and not dealing with the sin. God loves us and willingly forgives us of our sins when we confess them!