And we too have great reason to rejoice before Him, for He’s the God who has delivered us out of an even worse slavery and bondage! We weren’t slaves in Egypt, but the Bible tells us, we were in slavery and bondage to sin. Yet thanks be to God, for He has delivered us through the death of Jesus Christ His Son in our place on the Cross. Jesus has taken our punishment and defeated sin, death and the Devil for us so that we might be delivered safely out of slavery and bondage and instead be brought into the family of God as well-beloved sons and daughters.
Pentecost and joy go together. And not just any old joy, but joy for the sons and daughters of God. If you want to hear some more about that, then here's a sermon from Acts 2 and Deut. 16:9-12 for Whitsun Morning on Pentecostal Joy to which you can listen.