so He gave us this earth suit called a body and breathed life into it
Yes, and notice this scripture mentions being clothed with immortality at the first resurrection. Scripture cannot be more clear.
1 Cor 15:50-54 NIV I declare to you, brothers and sisters, that flesh and blood cannot inherit the kingdom of God, nor does the perishable inherit the imperishable. 51Listen, I tell you a mystery: We will not all sleep, but we will all be changed— 52in a flash, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed. 53For the perishable must clothe itself with the imperishable, and the mortal with immortality. 54When the perishable has been clothed with the imperishable, and the mortal with immortality, then the saying that is written will come true: “Death has been swallowed up in victory.”
Why did Jesus say the girl is only a sleep ? They all knew she had died. Jesus also chased all the people of no faith and doubt and unbelief away and then spoke life back into the girl.
The sleep Jesus mentions is not your sleep that you think we sleep.
Because that's how Jesus described death, with the word sleep. Without the breath of life we only have death.