We serve a God who has overcome fear. The second person of the Trinity took on flesh in order to destroy the devil, his works and effects, and the fear of death.
Hebrews 2:14-15: Inasmuch then as the children have partaken of flesh and blood, He Himself likewise shared in the same, that through death He might destroy him who had the power of death, that is, the devil, and release those who through fear of death were all their lifetime subject to bondage.
For everyone who dies in Christ, death is victory, and we trust God to provide for those we would leave behind. He is sovereign and good. Jesus tells us plainly, “And I say to you, My friends, do not be afraid of those who kill the body, and after that have no more that they can do. But I will show you whom you should fear: Fear Him who, after He has killed, has power to cast into hell; yes, I say to you, fear Him!” (Lk. 12:4-5).
Fearing God alone doesn’t make you imprudent, craven, worried, or tied up in knots; that is the kind of fear that perfect love casts out. The virtuous woman in Proverbs 31 buys and sells, industriously equips and adorns her household, and gives to the needy: “Strength and honor are her clothing, and she laughs at the time to come” (v25).
Fear God alone and cast your cares upon Him because He cares for you. Let Him deal your troubles and strengthen your trust in Him so you can laugh at what is to come.