A servant who does not long to be back with his Master while on a mission is not truly a servant of the Master. He is a servant of himself.
Galatians 4:6 And because you are sons, God sent out the Spirit of his Son into our hearts, crying out, “Abba! (Father!),” 7 so that you are no longer a slave but a son, and if a son, also an heir through God.
Acts 18:28 for“‘In him we live and move and have our being’ as even some of your own poets have said,“‘For we are indeed his offspring.’
1 John 4:13 By this we know that we remain in Him, and He in us: He has given us of His Spirit. 14 And we have seen and testify that the Father has sent His Son to be the Savior of the world.…
John 17:21 that all of them may be one, as You, Father, are in Me, and I am in You. May they also be in Us, so that the world may believe that You sent Me. 22 I have given them the glory You gave Me, so that they may be one as We are one—