We fear because we have a responsibility to work toward God and not away from Him. Since it is our choice, and we are not omniscient, we fear to err.
But if God works through us like a gardener works through a spade, then we would not have to fear anything. A tool has no reason to fear.
We do not need to fear anything , that is the comfort of our faith .
Isa 41:10 Fear thou not; for I [am] with thee: be not dismayed; for I [am] thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness.
Isa 41:13 For I the LORD thy God will hold thy right hand, saying unto thee, Fear not; I will help thee.
Luk 1:74 That he would grant unto us, that we being delivered out of the hand of our enemies might serve him without fear,
Pro 3:26 For the LORD shall be thy confidence, and shall keep thy foot from being taken.
Luk 12:32 Fear not, little flock; for it is your Father's good pleasure to give you the kingdom.
Rom 8:15 For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father.
2Ti 1:7 For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind.
1Jo 4:18 There is no fear in love; but perfect love casteth out fear: because fear hath torment. He that feareth is not made perfect in love.