Into your hands.
I sense this to be a sigh of contentment. It is the handing over of everything to the Father knowing that His purposes are being fulfilled.
This was the attitude that is reflected right through Jesus’ life. There had been many struggles, right from his temptations in the wilderness through to the garden of Gethsemane where the sweat poured off him in the intensity of the conflict. But all that time his focus had been on completing the work his father had given him to do. You see it in Matthew 26 when Jesus prays ‘“My Father! If it is possible, let this cup of suffering be taken away from me. Yet I want your will to be done, not mine.”’
Here, at the very moment of death, he is content to let go of everything and hand it all back to his father, knowing the outcome is entirely in the Father’s hands. It is a willing letting go of life to allow the Father to work out the consequences of his submission.