In Psalm 2 the psalmist speaking of God says in verse 4:
4 He who sits in the heavens shall laugh…
What is true of God is true of us. Ephesians 2 verses 4-6 say:
4 But God, who is rich in mercy, because of His great love with which He loved us, 5 even when we were dead in trespasses, made us alive together with Christ (by grace you have been saved), 6 and raised us up together, and made us sit together in the heavenly places in Christ Jesus…
God sits in heaven and we are told we sit in heavenly places in Christ Jesus. That speaks of the victorious heavenly position we have been given, through Christ, living in His power and from His perspective, one of faith and confidence because of our belief that God will see us through whatever we face.
When we live and walk out life from that position it is one of peace because of our confidence in God’s power and saving grace whatever we are up against.
Because of that peaceful confidence, where other wise we might be afraid, along with God we can laugh.